1 Publikasjoner - Tore Slagsvold Papers 1. Fremming, O. R., and T. Slagsvold. 1966. Kvantitativ fugletaksering i granskog basert på prøvefelt- og sjekkmetoden. Fauna, Oslo 19:183-195. 2. Fremming, O. R., and T. Slagsvold. 1967. Kvantitativ fugletaksering i granskog våren 1966 basert på prøvefelt- og sjekkmetoden. Fauna, Oslo 20:71-87. 3. Fremming, O. R., and T. Slagsvold. 1968. Fuglefaunaen i Atnasjøfeltet. Fauna, Oslo 21:179-192. 4. Slagsvold, T. 1969. Litt om takseringshastighetens innvirkning på oppdagelsessjansen ved fugletaksering. Fauna, Oslo 22:195-200. 5. Slagsvold, T. 1973. Variation in song activity of passerine forest bird communities throughout the breeding season. Special regard to the song thrush Turdus philomelos Brehm. Norwegian Journal of Zoology 21:139-158. 6. Slagsvold, T. 1973. Estimation of density of the song thrush Turdus philomelos Brehm by different methods based upon singing males. Norwegian Journal of Zoology 21:159-172. 7. Slagsvold, T. 1973. Critical remarks on bird census work performed by means of the mapping method. Norwegian Journal of Zoology 21:29-31. 8. Slagsvold, T. 1975. Competition between the great tit Parus major and the pied flycatcher Ficedula hypoleuca in the breeding season. Ornis Scandinavica 6:179190. 9. Slagsvold, T. 1975. Critical period for regulation of great tit (Parus major L.) and blue tit (Parus caeruleus L.) populations. Norwegian Journal of Zoology 23:67-88. 10. Slagsvold, T. 1975. Hypotheses on breeding time and clutch-size in birds. Norwegian Journal of Zoology 23:219-222. 11. Slagsvold, T. 1975. Production of young by the willow grouse Lagopus lagopus. (L.) in Norway in relation to temperature. Norwegian Journal of Zoology 23:269275. 12. Slagsvold, T. 1975. Breeding times of birds in relation to latitude. Norwegian Journal of Zoology 23:213-218. 13. Slagsvold, T. 1976. The phenology of Mitopus morio (F abr.) (Opiliones) in Norway. Norwegian Journal of Entomology 23:7-16. 14. Slagsvold, T. 1976. Annual and geographical variation in the time of breeding of the great tit Parus major and the pied flycatcher Ficedula hypoleuca in relation to environmental phenology and spring temperature. Ornis Scandinavica 7:127145. 15. Slagsvold, T. 1976. Arrival of birds from spring migration in relation to vegetational development. Norwegian Journal of Zoology 24:161-173. 16a. Slagsvold, T. 1977. Bird song activity in relation to breeding cycle, spring weather, and environmental phenology. Ornis Scandinavica 8:197-222. 16b. Slagsvold, T. 1977. Bird song activity in relation to breeding cycle, spring weather, and environmental phenology - statistical data. K. norske Vidensk. Selsk.Mus. Rapport Zool. Ser. 1977-12:1-18. 2 17. Slagsvold, T. 1977. Bird population changes after clearance of deciduous scrub. Biological Conservation 12:229-244. 18. Slagsvold, T. 1978. Is it possible to reduce a dense hooded crow Corvus corone cornix populatoin in a woodland area and what does it cost? Fauna norvegica Ser. C, Cinclus 1:37-44. 19. Slagsvold, T. 1978. Competition between the great tit Parus major and the pied flycatcher Ficedula hypoleuca: an experiment. Ornis Scandinavica 9:46-50. 20. Slagsvold, T. 1979. Environment and morphological variation of Mitopus morio (Fabr.) (Opiliones) in Norway. Journal of Biogeography 6:267-276. 21. Slagsvold, T. 1979. The fieldfare Turdus pilaris as a key species in the forest bird community. Fauna norvegica Ser. C, Cinclus 2:65-69. 22. Slagsvold, T. 1979. Age and sex distribution of hooded crows Corvus corone cornix in Norway. Fauna norvegica Ser. C, Cinclus 2:60-64. 23. Slagsvold, T. 1979. Hooded crow Corvus corone cornix census 1973-78 at Trondheim, Central Norway. Fauna norvegica Ser. C, Cinclus 2:1-6. 24. Slagsvold, T., and T. Grasaas. 1979. Autumn population size of the capercallie Tetrao urogallus in relation to weather. Ornis Scandinavica 10:37-41. 25. Slagsvold, T., and B.-E. Sæther. 1979. Time of egg-laying and clutch-size variation in the fieldfare Turdus pilaris. Fauna norvegica Ser. C, Cinclus 2:53-59. 26. Slagsvold, T. 1980. Egg predation in woodland in relation to the presence and density of breeding fieldfares Turdus pilaris. Ornis Scandinavica 11:92-98. 27. Slagsvold, T. 1980. Morphology of the hooded crow Corvus corone cornix in relation to locality, season, and year. Fauna norvegica Ser. C, Cinclus 3:16-35. 28. Slagsvold, T. 1980. Habitat selection in birds: on the presence of other species with special regard to Turdus pilaris. Journal of Animal Ecology 49:523-536. 29. Slagsvold, T. 1981. Clutch size and population stability in birds: a test of hypotheses. Oecologia (Berlin) 49:213-217. 30. Järvi, T., E. Røskaft, and T. Slagsvold. 1982. The conflict between male polygamy and female monogamy: some comments on the "cheating hypothesis". American Naturalist 120:689-691. 31. Slagsvold, T. 1982. Clutch size, nest size, and hatching asynchrony in birds: experiments with the fieldfare (Turdus pilaris). Ecology 63:1389-1399. 32. Slagsvold, T. 1982. Criteria for estimating the condition of birds - relationship between fat content and body size dimensions in the hooded crow Corvus corone cornix. Ornis Scandinavica 13:141-144. 33. Slagsvold, T. 1982. Sex, size, and natural selection in the hooded crow Corvus corone cornix. Ornis Scandinavica 13:165-175. 34. Slagsvold, T. 1982. Spring predictability and bird migration and breeding times: a comment on the phenomenon of leap-frog migration. Ornis Scandinavica 13:145148. 35. Slagsvold, T. 1982. Clutch size variation in birds: the nest predation hypothesis. Oecologia (Berlin) 54:159-169. 36. Slagsvold, T., and K. Skipnes. 1982. How representative of bird populations are specimens in museum collections: data on Norwegian corvids. Fauna norvegica Ser. C, Cinclus 5:27-35. 3 37. Slagsvold, T. 1983. Morphology of the hooded crow Corvus corone cornix in relation to age, sex and latitude. Journal of Zoology, London 199:325-344. 38. Skipnes, K., and T. Slagsvold. 1984. The behaviour of arctic terns Sterna paradisaea in relation to time of day, season and environmental factors in the pre-egg period. Fauna norvegica Ser. C, Cinclus 7:37-45. 39. Slagsvold, T. 1984. Clutch size variation of birds in relation to nest predation: on the cost of reproduction. Journal of Animal Ecology 53:945-953. 40. Slagsvold, T. 1984. The mobbing behaviour of the hooded crow Corvus corone cornix: anti-predator defence or self-advertisement? Fauna norvegica Ser. C, Cinclus 7:127-131. 41. Slagsvold, T., J. Sandvik, G. Rofstad, Ø. Lorentsen, and M. Husby. 1984. On the adaptive value of intraclutch egg-size variation in birds. Auk 101:685-697. 42. Røskaft, E., and T. Slagsvold. 1985. Differential mortality of male and female offspring in experimentally manipulated broods of the rook. Journal of Animal Ecology 54:261-266. 43. Slagsvold, T. 1985. Asynchronous hatching i passerine birds: influence of hatching failure and brood reduction. Ornis Scandinavica 16:81-87. 44. Slagsvold, T. 1985. Habitat phenology and spring migration schedules. Proceedings 18. International Ornithological Congress 1982: 638-647. 45. Slagsvold, T. 1985. The mobbing behaviour of the hooded crow Corvus corone cornix: in relation to age, sex, season, temperature and kind of enemy. Fauna norvegica Ser. C, Cinclus 8:9-17. 46. Slagsvold, T., and J. T. Lifjeld. 1985. Variation in plumage colour of the great tit Parus major in relation to habitat, season and food. Journal of Zoology, London 206:321-328. 47. Lifjeld, J. T., and T. Slagsvold. 1986. The function of courtship feeding during incubation in the pied flycatcher Ficedula hypoleuca. Animal Behaviour 34:1441-1453. 48. Slagsvold, T. 1986. Asynchronous versus synchronous hatching in birds: experiments with the pied flycatcher. Journal of Animal Ecology 55:1115-1134. 49. Slagsvold, T. 1986. Hatching asynchrony: interspecific comparisons of altricial birds. American Naturalist 128:120-125. 50. Slagsvold, T. 1986. Nest site settlement by the pied flycatcher: does the female choose her mate for the quality of his house or himself? Ornis Scandinavica 17:210-220. 51. Slagsvold, T., and J. T. Lifjeld. 1986. Mate retention and male polyterritoriality in the pied flycatcher Ficedula hypoleuca. Behavioral Ecology and Sociobiology 19:25-30. 52. Slagsvold, T., E. Røskaft, and S. Engen. 1986. Sex ratio, differential cost of rearing the young, and differential mortality between the sexes during the period of parental care: Fisher´s theory applied to birds. Ornis Scandinavica 17:117-125. 53. Lifjeld, J. T., T. Slagsvold, and G. Stenmark. 1987. Allocation of incubation feeding in a polygynous mating system: a study on pied flycatchers Ficedula hypoleuca. Animal Behaviour 35:1663-1669. 4 54. Partali, V., S. Liaaen-Jensen, T. Slagsvold, and J. T. Lifjeld. 1987. Carotenoids in food chain studies. II. The food chain of Parus spp. monitored by carotenoid analysis. Comparative Biochemistry and Physiology 87B:885-888. 55. Slagsvold, T. 1987. Nest site preference and clutch size in the pied flycatcher Ficedula hypoleuca. Ornis Scandinavica 18:189-197. 56. Breiehagen, T., and T. Slagsvold. 1988. Male polyterritoriality and female-female aggression in pied flycatchers Ficedula hypoleuca. Animal Behaviour 36:604606. 57. Lifjeld, J. T., and T. Slagsvold. 1988. Female pied flycatchers Ficedula hypoleuca choose male characteristics in homogeneous habitats. Behavioral Ecology and Sociobiology 22:27-36. 58. Lifjeld, J. T., and T. Slagsvold. 1988. Mate fidelity of renesting pied flycatchers Ficedula hypoleuca in relation to characteristics of the pair mates. Behavioral Ecology and Sociobiology 22:117-123. 59. Lifjeld, J. T., and T. Slagsvold. 1988. Effects of energy costs on the optimal diet: an experiment with pied flycatchers Ficedula hypoleuca feeding nestlings. Ornis Scandinavica 19:111-118. 60. Lifjeld, J. T., and T. Slagsvold. 1988. Feeding trios in the pied flycatcher Ficedula hypoleuca. Fauna norvegica Ser. C, Cinclus 11:100-102. 61. Slagsvold, T., and J. T. Lifjeld. 1988. Pied flycatchers Ficedula hypoleuca prefer dry nest cavities. Fauna norvegica Serie C, Cinclus 11:67-70. 62. Slagsvold, T., and J. T. Lifjeld. 1988. Why are some birds polyterritorial? Ibis 130:65-68. 63. Slagsvold, T., and J. T. Lifjeld. 1988. Plumage colour and sexual selection in the pied flycatcher Ficedula hypoleuca. Animal Behaviour 36:395-407. 64. Slagsvold, T., and J. T. Lifjeld. 1988. Ultimate adjustment of clutch size to parental feeding capacity in a passerine bird. Ecology 69:1918-1922. 65. Slagsvold, T., J. T. Lifjeld, G. Stenmark, and T. Breiehagen. 1988. On the cost of searching for a mate in female pied flycatchers Ficedula hypoleuca. Animal Behaviour 36:433-442. 66. Slagsvold, T., G. Rofstad, and J. Sandvik. 1988. Partial albinism and natural selection in the hooded crow Corvus corone cornix. Journal of Zoology, London 214:157-166. 67. Stenmark, G., T. Slagsvold, and J. T. Lifjeld. 1988. Polygyny in the pied flycatcher, Ficedula hypoleuca: a test of the deception hypothesis. Animal Behaviour 36:1646-1657. 68. Lifjeld, J. T., and T. Slagsvold. 1989. How frequent is cuckoldry in pied flycatchers Ficedula hypoleuca? - Problems with the use of heritability estimates of tarsus length. Oikos 54:205-210. 69. Lifjeld, J. T., and T. Slagsvold. 1989. Female nutritional state influences the allocation of incubation feeding by polygynous pied flycatcher males. Animal Behaviour 38:903-904. 70. Lifjeld, J. T., and T. Slagsvold. 1989. Allocation of parental investment by polygynous pied flycatcher males. Ornis Fennica 66:3-14. 71. Slagsvold, T. 1989. Experiments on clutch size and nest size in passerine birds. Oecologia (Berlin) 80:297-302. 72. Slagsvold, T. 1989. On the evolution of clutch size and nest size in passerine birds. Oecologia (Berlin) 79:300-305. 5 73. Slagsvold, T., and J. T. Lifjeld. 1989. Hatching asynchrony in birds: the hypothesis of sexual conflict over parental investment. American Naturalist 134:239-253. 74. Slagsvold, T., and J. T. Lifjeld. 1989. Constraints on hatching asynchrony and egg size in pied flycatchers. Journal of Animal Ecology 58:837-849. 75. Dale, S., T. Amundsen, J. T. Lifjeld, and T. Slagsvold. 1990. Mate sampling behaviour of female pied flycatchers: evidence for active mate choice. Behavioral Ecology and Sociobiology 27:87-91. 76. Dale, S., and T. Slagsvold. 1990. Random settlement of female pied flycatchers, Ficedula hypoleuca: significance of male territory size. Animal Behaviour 39:231-243. 77. Lifjeld, J. T., and T. Slagsvold. 1990. Manipulations of male parental investment in polygynous pied flycatchers. Behavioral Ecology 1:48-54. 78. Slagsvold, T. 1990. Fisher´s sex ratio theory may explain hatching patterns in birds. Evolution 44:1009-1017. 79. Slagsvold, T., and J. T. Lifjeld. 1990. Return rates of male pied flycatchers: an experimental study manipulating breeding success. Page 441-452 in J. Blondel, A. Gosler, J.-D. Lebreton and R. McCleery, eds. Population biology of passerine birds. Springer, Berlin, Heidelberg, New York. 80. Slagsvold, T., and J. T. Lifjeld. 1990. Influence of male and female quality on clutch size in tits (Parus spp.). Ecology 71:1258-1266. 81. Amundsen, T., and T. Slagsvold. 1991. Hatching asynchrony: facilitating adaptive or maladaptive brood reduction? Proceedings of the XXth International Ornithological Congress, New Zealand 1990: 1707-1719. 82. Amundsen, T., and T. Slagsvold. 1991. Asynchronous hatching in the pied flycatcher: an experiment. Ecology 72:797-804. 83. Lifjeld, J. T., and T. Slagsvold. 1991. Sexual conflict among polygynous pied flycatchers feeding young. Behavioral Ecology 2:106-115. 84. Lifjeld, J. T., T. Slagsvold, and H. M. Lampe. 1991. Low frequency of extra-pair paternity in pied flycatchers revealed by DNA fingerprinting. Behavioral Ecology and Sociobiology 29:95-101. 85. Slagsvold, T., and S. Dale. 1991. Mate choice models: can cost of searching and cost of courtship explain mating patterns of female pied flycatchers? Ornis Scandinavica 22:319-326. 86. Slagsvold, T., and G.-P. Sætre. 1991. Evolution of plumage color in male pied flycatchers (Ficedula hypoleuca): evidence for female mimicry. Evolution 45:910-917. 87. Dale, S., H. Rinden, and T. Slagsvold. 1992. Competition for a mate restricts mate search of female pied flycatchers. Behavioral Ecology and Sociobiology 30:165176. 88. Husby, M., and T. Slagsvold. 1992. Post-fledging behaviour and survival in male and female magpies Pica pica. Ornis Scandinavica 23:483-490. 89. Slagsvold, T., and T. Amundsen. 1992. Do great tits adjust hatching spread, egg size and offspring sex ratio to changes in clutch size? Journal of Animal Ecology 61:249-258. 6 90. Slagsvold, T., T. Amundsen, S. Dale, and H. Lampe. 1992. Female-female aggression explains polyterritoriality in male pied flycatchers. Animal Behaviour 43:397-407. 91. Slagsvold, T., M. Husby, and J. Sandvik. 1992. Growth and sex ratio of nestlings in two species of crows: how important is hatching asynchrony? Oecologia (Berlin) 90:43-49. 92. Slagsvold, T., and J. T. Lifjeld. 1992. Plumage color is a condition-dependent sexual trait in male pied flycatchers. Evolution 46:825-828. 93. Sætre, G.-P., and T. Slagsvold. 1992. Evidence for sex recognition from plumage colour by the pied flycatcher Ficedula hypoleuca. Animal Behaviour 44:293-299. 94. Slagsvold, T. 1993. Sex recognition and breast stripe size in great tits. Ardea 81:35-42. 95. Slagsvold, T. 1993. Female-female aggression and monogamy in great tits Parus major. Ornis Scandinavica 24:155-158. 96. Dale, S., and T. Slagsvold. 1994. Male pied flycatchers do not choose mates. Animal Behaviour 47:1197-1205. 97. Dale, S., and T. Slagsvold. 1994. Polygyny and deception in the pied flycatcher: can females determine male mating status? Animal Behaviour 48:1207-1217. 98. Slagsvold, T., T. Amundsen, and S. Dale. 1994. Selection by sexual conflict for evenly spaced offspring in blue tits. Nature (London) 370:136-138. 99. Slagsvold, T., and S. Dale. 1994. Why do female pied flycatchers mate with already mated males: deception or restricted mate sampling? Behavioral Ecology and Sociobiology 34:239-250. 100. Slagsvold, T., S. Dale, and G.-P. Sætre. 1994. Dawn singing in the great tit (Parus major): mate attraction, mate guarding, or territorial defence? Behaviour 131:115-138. 101. Slagsvold, T., and J. T. Lifjeld. 1994. Polygyny in birds: the role of competition between females for male parental care. American Naturalist 143:59-94. 102. Sætre, G.-P., S. Dale, and T. Slagsvold. 1994. Female pied flycatchers prefer brightly coloured males. Animal Behaviour 48:1407-1416. 103. Dale, S., and T. Slagsvold. 1995. Female contests for nest sites and mates in the pied flycatcher Ficedula hypoleuca. Ethology 99:209-222. 104. Slagsvold, T., T. Amundsen, and S. Dale. 1995. Costs and benefits of asynchronous hatching in blue tits (Parus caeruleus). Journal of Animal Ecology 64:563-578. 105. Slagsvold, T., and S. Dale. 1995. Polygyny and female aggression in the pied flycatcher: a comment on Rätti et al. Animal Behaviour 50:847-849. 106. Slagsvold, T., S. Dale, and A. Kruszewicz. 1995. Predation favours cryptic coloration in breeding male pied flycatchers. Animal Behaviour 50:1109-1121. 107. Sætre, G.-P., T. Fossnes, and T. Slagsvold. 1995. Food provisioning in the pied flycatcher: do females gain direct benefits from choosing bright coloured males? Journal of Animal Ecology 64:21-30. 108. Ellegren, H., J.T. Lifjeld, T. Slagsvold, and C.R. Primmer. 1995. Handicapped males and extrapair paternity in pied flycatchers: a study using microsatellite markers. Molecular Ecology 4:739-744. 7 109. Haftorn, S., and T. Slagsvold. 1995. Egg covering in birds: description of the behaviour in tits (Parus spp.) and a test of hypotheses of its function. Fauna norvegica Ser. C., Cinclus 18:85-106. 110. Rinden, H., S. Dale, and T. Slagsvold. 1995. Male display behaviour and the assessment of male quality during visits by female pied flycatchers. Fauna norvegica Ser. C., Cinclus 18:107-117. 111. Dale, S., A. Kruszewicz, and T. Slagsvold. 1996. Effects of blood parasites on sexual and natural selection in the pied flycatcher. Journal of Zoology, London 238:373-393. 112. Dale, S. and T. Slagsvold. 1996. Mate choice on multiple cues, decision rules and sampling strategies in female pied flycatchers. Behaviour 133: 903-944. 113. Slagsvold, T., and S. Dale. 1996. Disappearance of female pied flycatchers in relation to breeding stage and experimentally induced molt. Ecology 77: 461-471. 114. Sætre, G.-P., and T. Slagsvold. 1996. The significance of female mimicry in male contests. American Naturalist 147: 981-995. 115. Amundsen, T. and T. Slagsvold. 1996. Lack´s brood reduction hypothesis and avian hatching asynchrony: what´s next? Oikos 76:613-620. 116. Slagsvold, T. 1996. Dawn and dusk singing of male American robins (Turdus migratorius) in relation to female behavior. Wilson Bulletin 108: 507-515. 117. Dale, S., R. Gustavsen, and T. Slagsvold. 1996. Risk taking during parental care: a test of three hypotheses applied to the pied flycatcher. Behavioral Ecology and Sociobiology 39:31-42. 118. Dale, S. and T. Slagsvold. 1996. Plumage coloration and conspicuousness in birds: experiments with the pied flycatcher. Auk 113: 849-857. 119. Lifjeld, J.T., T. Slagsvold, S. Dale, and H. Ellegren. 1997. A sexually selected paradox in the pied flycatcher: attractive males are cuckolded. Auk 114:112-115. 120. Lifjeld, J.T., T. Slagsvold, and H. Ellegren. 1997. Experimental mate switching in pied flycatchers: male copulatory access and fertilization success. Animal Behaviour 53:1225-1232. 121. Slagsvold, T. and J.T. Lifjeld. 1997. Incomplete female knowledge of male quality may explain variation in extra-pair paternity in birds. Behaviour 134: 353371. 122. Birkhead, T.R., J.V. Briskie, J.T. Lifjeld, T. Slagsvold. 1997. Breeding cycle patterns of sperm storage in the pied flycatcher (Ficedula hypoleuca). Auk 114, 792-796. 123. Slagsvold, T. 1997. Is there a sexual conflict over hatching asynchrony in American robins? Auk 114:593-600. 124. Slagsvold, T. 1997. Brood division in birds in relation to offspring size: sibling rivalry and parental control. Animal Behaviour 54, 1357-1368. 125. Karlsen, R. and T. Slagsvold. 1997. Aggression of female pied flycatchers towards caged conspecific female intruders. Fauna norvegica Ser. C., Cinclus 20:39-47. 126. Sætre, G.-P., T. Slagsvold, A. Kruszewicz and H. Viljugrein. 1997. Paternal care in pied flycatchers Ficedula hypoleuca: energy expenditure in relation to plumage colour and mating status. Ardea 85:233-242. 127. Amundsen, T. and T. Slagsvold. 1998. Hatching asynchrony in great tits: a bethedging strategy? Ecology 79: 295-304. 8 128. Lifjeld, J.T., T. Slagsvold, and H. Ellegren. 1998. Experimentally reduced paternity affects paternal effort and reproductive success in pied flycatchers. Animal Behaviour 55:319-329. 129. Lampe, H.M. and T. Slagsvold. 1998. Female pied flycatchers respond differently to songs of mates, neighbours and strangers. Behaviour 135:269-285. 130. Slagsvold, T. 1998. On the origin and rarity of interspecific nest parasitism in birds. American Naturalist 152:28-36. 131. Slagsvold, T. 1999. Sexual conflict in birds with biparental care: share of care in small vs. large broods and late vs. early broods. In: Adams, N. & Slotow, R. (Eds), pp. 2622-2638. Proc. 22 Int. Ornithol. Congr., Durban. Johannesburg, BirdLife South Africa. 132. Slagsvold, T. and M.A. Johansen. 1999. Mass loss in female pied flycatchers Ficedula hypoleuca during late incubation: supplementation fails to support the reproductive stress hypothesis. Ardea 86:203-211. 133. Slagsvold, T. and H. Viljugrein. 1999. Mate choice copying versus preference for actively displaying males by female pied flycatchers. Animal Behaviour 57:679-686. 134. Slagsvold, T., S. Dale, and H.M. Lampe. 1999. Does female aggression prevent polygyny? - an experiment with pied flycatchers. Behavioral Ecology and Sociobiology 45: 403-410. 135. Dale, S., T. Slagsvold, H.M. Lampe and G.-P. Sætre. 1999. Population divergence in sexual ornaments: the white forehead patch of Norwegian pied flycatchers is small and unsexy. Evolution 53:1235-1246. 136. Slagsvold, T. and T. Drevon. 1999. Female pied flycatchers trade between male quality and mating status in mate choice. Proceedings of the Royal Society of London B 266:917-921. 137. Listøen, C., R. Fjeld Karlsen, and T. Slagsvold. 1999. Risk taking during parental care: a test of the harm to offspring hypothesis. Behavioral Ecology 11:40-43. 138. Breiehagen, T. and T. Slagsvold. 2000. Do male pied flycatchers Ficedula hypoleuca become polygynous because they monopolize resources of high quality? Ornis Norvegica 23:8-23 139. Rinden, H., H. Lampe, T. Slagsvold and Y. Espmark. 2000. Song quality does not indicate male parental abilities in the pied flycatcher Ficedula hypoleuca. Behaviour 137:809-823. 140. Slagsvold, T. and S. Rohwer. 2000. Behavioral domination of food delivery by tree swallow nestlings. Wilson Bulletin 112:278-281. 141. Slagsvold, T. and S. Rohwer. 2000. Sexual conflict in birds with biparental care: should a parent desert a brood with low reproductive value? Ornis Norvegica 23:38-49. 142. Slagsvold, T. 2000. Why are some males dull? Nature (London) 407:955-956. 143. Holen, Ø. H., G. -P. Sætre, T. Slagsvold, and N. C. Stenseth. 2001. Parasites and supernormal manipulation. Proceedings of the Royal Society of London B 268:2551-2558. 144. Slagsvold, T., and B. T. Hansen. 2001. Sexual imprinting and the origin of obligate brood parasitism in birds. American Naturalist 158: 354-367. 9 145. Slagsvold, T., A. Johnsen, H. M. Lampe, and J. T. Lifjeld. 2001. Do female pied flycatchers seek extra-pair copulations with familiar males? A test of the incomplete knowledge hypothesis. Behavioral Ecology 12:412-418. 146. Slagsvold, T., B. T. Hansen, L. E. Johannessen, and J. T. Lifjeld. 2002. Mate choice and imprinting in birds studied by cross-fostering in the wild. Proceedings of the Royal Society of London B 269:1449-1455. 147. Dale, S., Slagsvold, T., H. M. Lampe, and J. T. Lifjeld. 2002. Age-related changes in morphological characters in the pied flycatcher Ficedula hypoleuca. Avian Science 2:153-166. 148. Hansen, B. T. and T. Slagsvold. 2003. Rival imprinting: interspecifically crossfostered tits defend their territories against heterospecific intruders. Animal Behaviour 65: 1117-1123. 149. Hansen, B. T. and T. Slagsvold. 2004. Early learning affects social dominance: interspecifically cross-fostered tits become subdominant. Behavioral Ecology 15: 262-268. 150. Slagsvold. T. 2004. Cross-fostering of pied flycatchers (Ficedula hypoleuca) to heterospecific hosts in the wild: a study of sexual imprinting. Behaviour 141:1079-1102. 151. Stige, L. C., Slagsvold, T. and Vøllestad, A. 2005. Individual fluctuating asymmetry in pied flycatchers (Ficedula hypoleuca) persists across moults, but is not heritable and not related to fitness. Evolutionary Ecology Research 7:381406. 152. Johannessen, L. E., Slagsvold, T., Hansen, B. T. and Lifjeld, J. T. 2005. Manipulation of male quality in wild tits: effects on paternity loss. Behavioral Ecology 16:747-754. 153. Drevon, T. and Slagsvold, T. 2005. When and from whom do female pied flycatchers (Ficedula hypoleuca) solicit copulations? Behaviour 142:1059-1076. 154. Johannessen, L. E., Slagsvold, T. and Hansen, B. T. 2006. Song structure and repertoire size affected by social rearing conditions: experimental evidence from the field. Animal Behaviour 72:83-95. 155. Mysterud, I., Drevon, T. and Slagsvold, T. 2006. An evolutionary interpretation of gift-giving behavior in modern Norwegian society. Evolutionary Psychology 4:406-425. 156. Slagsvold, T. and Wiebe, K. L. 2007. Learning the ecological niche. Proceedings of the Royal Society of London B 274:19-23. 157. Hansen, B. T., Johannessen, L. E. and Slagsvold, T. 2007. No cultural transmission of species recognition between parents and offspring in free-living great tits and blue tits. Behavoral Ecology and Sociobiology 61:1203-1209. 158. Landys, M. M., Goymann, W., Raess, M. and Slagsvold, T. 2007. Hormonal responses to male-male social challenge in the blue tit Cyanistes caeruleus: single-broodedness as an explanatory variable. Physiological and Biochemical Zoology 80:228-240. 10 159. Slagsvold, T. and Wiebe, K. L. 2007. Hatching asynchrony and early nestling mortality: the feeding constraint hypothesis. Animal Behaviour 73:691-700. 160. Slagsvold, T. and Sonerud, G. A. 2007. Prey size and ingestion rate in raptors: importance for sex roles and reversed sexual size dimorphism. Journal of Avian Biology 38:650-661. 161. Hansen, B. T., Johannessen, L. E. and Slagsvold, T. 2008. Imprinted species recognition lasts for life in free-living great tits and blue tits. Animal Behaviour 75:921-927. 162. Amrhein, V., Johannessen, L. E., Kristiansen, L. and Slagsvold, T. 2008. Reproductive strategy and singing activity: blue tit and great tit compared. Behavioral Ecology and Sociobiology 62:1633-1641. 163. Calhim, S., Lampe, H. M., Slagsvold, T. and Birkhead, T. R. 2009. Selection on sperm morphology under relaxed sperm competition in a wild passerine bird. Biology Letters 5:58-61. 164. Eriksen, A., Lampe, H. and Slagsvold, T. 2009. Interspecific cross-fostering affects song acquisition but not mate choice in pied flycatchers, Ficedula hypoleuca. Animal Behaviour 78: 857-863. 165. Hansen, B. T., Johannessen, L. E. and Slagsvold, T. 2009. Interspecific crossfostering affects mate guarding behaviour in great tits (Parus major). Behaviour 146:1349-1361. 166. Johannessen, L. E., Kristiansen, L., Hansen, B. T. and Slagsvold, T. 2009. Facultative adjustment of brood sex ratio in response to indirect manipulation of behaviour. Ethology 115:1057-1065. 167. Wiebe, K.L. and Slagsvold, T. 2009. Mouth coloration in nestling birds: increasing detection or signalling quality? Animal Behaviour 78:1413-1420. 168. Wiebe, K. L. and Slagsvold, T. 2009. Parental sex differences in food allocation to junior brood members as mediated by prey size. Ethology 115:49-58. 169. Turtumøygard, T. and Slagsvold, T. 2010. Evolution of brood parasitism in birds: constraints related to prey type. Behaviour 147:299-317. 170. Hansen, B. T., Johannessen, L. E. and Slagsvold, T. 2010. Interspecific crossfostering of great tits (Parus major) by blue tits (Cyanistes caeruleus) affects inter- and intraspecific communication. Behaviour 147, 413-424. 171. Steen, R., Løw, L. M., Sonerud, G. A., Selås, V. and Slagsvold, T. 2010. The feeding constraint hypothesis: prey preparation as a function of prey mass and nestling age in the Eurasian kestrel (Falco tinnunculus). Animal Behaviour 80:147-153. 172. Slagsvold, T., Sonerud, G. A., Grønlien, H. and Stige, L. C. 2010. Prey handling in raptors in relation to their morphology and feeding niches. Journal of Avian Biology 41:488-497. 173. Landys, M.M., Goymann, W., Schwabl, I., Trapschuh, M. and Slagsvold, T. 2010. Impact of season and social challenge on testosterone and corticosterone levels in a year-round territorial bird. Hormones and Behavior 58:317-325. 174. Lambrechts, M.M. et al. (56 authors, including T. Slagsvold). 2010. The design of artificial nestboxes for the study of secondary hole-nesting birds: a review of methodological inconsistencies and potential biases. Acta Ornithologica 45:126. 11 175. Eriksen, A., Slagsvold, T. and Lampe. H. M. 2011. Vocal plasticity – are pied flycatchers, Ficedula hypoleuca, open-ended learners? Ethology 117:188-198. 176. Saggese, K., Korner-Nievergelt, F., Slagsvold, T. and Amrhein, V. 2011. Wild bird feeding delays start of dawn singing in the great tit. Animal Behaviour 81: 361:361-365. 177. Johnsen, A., Vesterkjær, K. and Slagsvold, T. 2011. Do male pied flycatchers (Ficedula hypoleuca) adjust their feeding effort according to egg colour? Ethology 117:309-317. 178. Nilsson, A. L.K., Knudsen, E., Jerstad, K., Røstad, O.W., Walseng, B., Slagsvold, T. and Stenseth, N.C. Climate effects on population fluctuations of the white-throated dipper Cinclus cinclus. Journal of Animal Ecology 80:235-243. 179. Slagsvold, T. and Wiebe, K. L. 2011. Social learning in birds and its role in shaping a foraging niche. Philosophical Transactions of the Royal Society B 366:969-977. 180. Steen, R., Løw, L.M., Sonerud, G. A., Selås, V. and Slagsvold, T. 2011. Prey delivery rates as estimates of prey consumption by Eurasian kestrel (Falco tinnunculus) nestlings. Ardea 99:1-8. 181. Størmer, F.C., Mysterud, I. and Slagsvold, T. 2011. Evolution and possible storage of information in a magnetite system of significance for brain development. Medical Hypotheses 76:901-904. 182. Nilsson, A.L., Stige, L.C., Jerstad, K., Røstad, O.W., Slagsvold, T., Knudsen, E., Walseng, B. And Stenseth, N.C. 2011. To make the most of what we have: extracting phenological data from nestling measurements. International Journal of Biometeorology 55:797-804. 183. Landys, M.M., Goymann, W. and Slagsvod, T. 2011. Rearing conditions have long-term consequences for stress responsiveness in free-living birds. General and comparative endocrinology 174:219-224. 184. Wiebe, K.L. and Slagsvold, T. 2012. Brood parasites may use gape size constraints to exploit provisioning rules of smaller hosts: an experimental test of mechanisms of food allocation. Behavioral Ecology 23:391-396. 185. Lifjeld, J.T., Laskemoen, T., Kleiven, O., Pedersen, A.T.M., Lampe, H.M., Rudolfsen, G., Schmoll, T. and Slagsvold, T. 2012. No evidence for precopulatory sexual selection on sperm length in a passerine bird. Plos One 7, e32611. 186. Steen, R. , Sonerud, G.A. and Slagsvold, T. 2012. Parents adjust feeding effort in relation to nestling age in the Eurasian kestrel (Falco tinnunculus). Journal of Ornithology 153:1087-1099. 187. Burger, C., Belskii, E., Eeva, T., Laaksonen, T., Mägi, M., Mänd, R., Qvarnström, A., Slagsvold, T., Veen, T., Visser M.E., Wiebe, K.L., Wiley, C., Wright, J. and Both, C. 2012. Climate change, breeding date and nestling diet: how temperature differentially affects seasonal changes in pied flycatcher diet depending on habitat variation. J. Anim. Ecol. 81:926-936. 188. Husek, J., Weidinger, K., Adamik, P. and Slagsvold, T. 2012. Impact of nesting mortality on avian breeding phenologhy: a case study on the red-backed shrike (Lanius collurio). Plos One 7, e43944. 189. Wiebe, K.L. and Slagsvold, T. 2012. Parents take both size and conspicuousness into account when feeding nestlings in dark cavity nests. Animal Behaviour 84, 1307-1313. 12 190. Sonerud, G.A., Steen R., Løw, L.M., Røed, L.T., Skar, K., Selås, V. and Slagsvold, T. 2013, Size-biased allocation of prey from male to offspring via female: family conflicts, prey selection, and evolution of sexual size dimorphism in raptors. Oecologia in press. 191. Landys, M.M., Goymann, W., Soma, K.K. and Slagsvold, T. Year-round territorial aggression and plasma DHEA in the European nuthatch Sitta europaea. Submitted to Hormones and Behavior in press. 192. Slagsvold, T., Eriksen, A., de Ayala, R.M., Husek, J. and Wiebe, K. 2013. Postfledging movements in birds: do tit families track environmental phenology? Auk, in press. 193. Slagsvold, T., Wigdahl Kleiven, K., Eriksen, A. and Johannessen, L.E. 2013. Vertical and horizontal transmission of nest site preferences in titmice. Animal Behaviour, in press.. Book reviews 1. Slagsvold, T. 2000. Bird Nests. Nature (London), 409:18-19. 2. Slagsvold, T. 2007. Builders with little brains. Nature (London), 446:730. 3. Slagsvold, T. 2008. The ecology and behavior of chickadees and titmice. An integrated approach (Ken A. Otter (ed), 2007, Oxford University Press). International Society for Behavioral Ecology. Newsletter. 20, .. Rapporter, short notes etc. 1. Slagsvold, T. 1966. Flere funn av Metoecus paradoxus (L.). Fauna, Oslo 19:41. 2. Slagsvold, T., and O. R. Fremming, O. R. 1966. Tidlig åkerrikse. Sterna 7:194. 3. Slagsvold, T. 1970. Båndkorsnebb i Østre Slidre. Sterna 9:190. 4. Slagsvold, T., B. Sonstad and K. Reite. 1970. Gresshoppesanger i Østre Slidre. Sterna 9:190. 5. Schiemann, H., J. Rhode and T. Slagsvold. 1972. Flere fugleobservasjoner i Atnasjøfeltet. Fauna, Oslo 25:123-124. 6. Slagsvold, T. 1973. Telling av fugl etter sprøyting med fenoksysyrer. Pp. 27-30 in NAVF NTNF. Symposium om miljøvirkninger av pesticider og enkelte beslektede stoffer. 7. Slagsvold, T. 1976. Fuglebestanden i Mattisdalen, Alta, 1976. Sterna 15:201-206. 8. Slagsvold, T. 1978. Breeding events of birds in relation to spring temperature and environmental phenology. Introduction. Ph. D. thesis, University of Trondheim, Trondheim. 9. Slagsvold, T. 1978. Hønsehauk som kråkespesialist. Vår Fuglefauna 1:126. 10. Slagsvold, T., and J. Tillerbakk. 1978. Tidlig hekking av ringdue og dompap i Sør-Trøndelag. Vår Fuglefauna 1:36. 11. Slagsvold, T. 1979. Nordiske kråkefuglpopulasjoner. Viltrapport 10:84-92. 12. Slagsvold, T. 1979. Sören Svensson: Fågelinventeringar - metoder och tilllämpningar. Anser 18:302-304. 13 13. Slagsvold, T. 1980. Jon Loman: Social organization and reproductive ecology in a population of the hooded crow Corvus corone cornix. Anser 19:257-259. 14. Slagsvold, T. 1981. Goshawk catching a hooded crow. Fauna norvegica Ser. C, Cinclus 4:47-48 15. Slagsvold, T. 1982. Rekordhøyt reir av rødvingetrost. Vår Fuglefauna 5:19. 16. Slagsvold, T. 1982. Goshawk attacking stuffed eagle owl. British Birds 75:330333. 17. Slagsvold, T. 1985. Nest site selection. Pp. 391-393 in Campbell, B., and E. Lack (eds.). A Dictionary of Birds. Poyser, Staffordshire. 18. Mock, D. W., and T. Slagsvold. 1991. Introductory remarks: avian brood reduction. Proceedings of the XXth International Ornithological Congress, New Zealand 1990:1703-1706. 19. Lampe, H., and T. Slagsvold. 1994. Individual recognition based on male song in a female bird, Abstract of poster. Journal für Ornithologie 135: 163. 20. Slagsvold, T. 2003. In memory of Svein Haftorn. Ornis Norvegica 26:55-63. 21. Slagsvold, T. 2004. In memorian: Svein Haftorn, 1925-2003. Auk 122:358. 22. Slagsvold, T. 2004. Minnetale over professor emeritus Svein Haftorn. Det Norske Videnskaps- Akademi. Årbok 2004, 130-134. 23. Slagsvold, T. 2004. Partnervalg og seksuell preging hos fugl. Det Norske Videnskaps- Akademi. Årbok 2004, 437-446. Populærvitenskap 1. Slagsvold, T., and Sonerud, B. 1971. Undersøkelse og vurdering av dyrelivet i området kring Tronsvangen Seterhotel, Alvdal, med sikte på zoologiundervisning ved en fremtidig fjellskole. 9 pp. 2. Slagsvold, T. 1976. Rypeproduksjon og temperatur. Jakt-Fiske-Friluftsliv 1-2:2022. 3. Slagsvold, T. 1977. Kongelig kråke. Jakt-Fiske-Friluftsliv 3:10-11. 4. Slagsvold, T. 1977. Forskningen, jegerne og kråka. Jakt-Fiske-Friluftsliv 12:4243. 5. Slagsvold, T. 1977. Skogsprøyting og dyreliv - økologiske effekter. Norsk Natur 3:83-84. 6. Slagsvold, T. 1977. Skogsprøyting og dyreliv - nok en gang. Norsk Natur 6:178179. 7. Slagsvold, T. 1978. Rapport fra kråkeundersøkelsen: sett alle kluter til i marsapril. Jakt-Fiske-Friluftsliv 10-11:28-31. 8. Slagsvold, T. 1978. Hønsehauk som kråkespesialist. Vår Fuglefauna 1: 126. 9. Slagsvold, T. 1979. Storfuglen og været. Jakt-Fiske-Friluftsliv 12:48-49. 10. Slagsvold, T. 1979. Rapport fra innsamlingen av kråkevinger i januar-februar 1979. Jakt-Fiske-Friluftsliv 12:42-43. 11. Slagsvold, T. 1979. Forsøk med utskyting av kråke i et skogsområde. Viltrapport 10:114-115. 12. Slagsvold, T. 1979. Skogen, småfugl og rovfugl. Tidsskrift for Skogbruk 3. 13. Slagsvold, T. 1980. Kråkjakt - et forsök i Norge. Svensk Jakt 3:144-146. 14. Slagsvold, T. 1980. Kråkene i Trondheim om vinteren. Fortids kultur - samtids natur. DKNVS-Museet/Adresseavisen 4/2 1980. 14 15. Slagsvold, T. 1980. Kamp om fuglekassene. Fortids kultur - samtids natur. DKNVS-Museet/Adresseavisen 21/5 1980. 16. Slagsvold, T. 1981. Darwins lære og gråtrosten: skal jeg legge fem eller seks egg? Fortids kultur - samtids natur. DKNVS-Museet/Adresseavisen 10/8 1981. 17. Barth, E.K., and Slagsvold, T. 1984. En venn av format passerer en milepel. Professor dr. philos Svein Haftorn 60 år 30. januar 1985. Fauna norvegica Ser. C, Cinclus 7:65-69. 18. Slagsvold, T. 1985. Fugleforskning i nærmiljøet: kråke og skjære. Vår Fuglefauna 8:119-120. 19. Slagsvold, T. 1986. Ekteskap og utroskap - hos fugl. Årbok for Det Norsle Videnskaps-akademi. 20. Ree, V., P.-G. Bentz, F. Mehlum, and T. Slagsvold. 1987. Europas Fugleliv. Gyldendal, Oslo (tilrettelegging til norsk av D. Attenborough and C. Perrins: A new Generation Guide - Birds). 21. Slagsvold, T. 1991. Fluesnapperne. I: Hogstad, O. (red.) Norges Dyr - Fugler. Cappelen, Oslo. 22. Slagsvold, T. 1994. Hvorfor er noen hanner så populære? Evolusjon av polygami hos fugl. Naturen 118:9-13. 23. Mysterud, Iver, Mysterud, Ivar & Slagsvold, T. 1997. Snubler i minefeltet. Dagbladet 08.07.97 (kronikk) 24. Mysterud, Iver, Mysterud, Ivar & Slagsvold, T. 1997. Genene i vårt besværlige liv. Dagbladet 05.08.97 (kronikk) 25. Mysterud, Ivar, Mysterud, Iver & Slagsvold, T. 2006. Myten om det frigjorte mennesket. Dagbladet 31.01.06 (kronikk) 26. Mysterud, Ivar, Mysterud, Iver & Slagsvold, T. 2006. Ortodokse psykologer todeler mennesket. Dagbladet 21.06.06 (kronikk) 27. Slagsvold, T. 2008. En doktorgrad i hagen. S. 165-171 i Mysterud, I. og Mysterud A. (red.). Med lua i hånda. Festskrift til Ivar Mysterud på 70-årsdagen. Biologisk institutt, Universitetet i Oslo, Oslo.