Main topics Synurbization of birds (with Kestrel as an example) Impact of habitat fragmentation on birds’ breeding biology and level of nest predation Reintroduction of Peregrines in Poland Recent scientific projects Does process of bird 4078/B/P01/2007/33 synurbization lead to genetic consequences? MNiSW Grant No Publications Rejt Ł., Turlejski K., Bronche K., Topczewski A. M. 2000. Can food caching increase a frequency of feedings in urban Kestrels Falco tinnunculus? Acta Ornithol. 35: 217–221. PDF Rejt Ł. 2001. Feeding activity and seasonal changes in diet of urban Peregrine Falcons Falco peregrinus. Acta Ornithol. 36: 165–169. PDF Rejt Ł. 2002. Sexes share during incubation in urban Peregrines Falco peregrinus breeding in Warsaw, Poland. Berkut 11: 168–172. Rejt Ł. 2003. Why do urban Peregrines lay earlier in Warsaw? Ekologia (Bratislava) 22: 424–428. PDF Erritzoe J., Mazgajski T. D., Rejt Ł. 2003. Bird casualties on European roads — a review. Acta Ornithol. 38: 77–93. Rejt Ł. 2004. Nocturnal feeding of young by urban Peregrine Falcons (Falco peregrinus) in Warsaw (Poland). Polish Journal of Ecology 52: 63–68. PDF Rejt Ł. 2004. Nocturnal behaviour of urban Peregrines at the nest during nestling period. Vestnik Zoologii 38: 87–90. Rejt Ł., Rutkowski R., Gryczyńska-Siemiątkowska A. 2004. Genetic variability of urban Kestrels in Warsaw — preliminary data. Zoologica Poloniae 49: 199–209. PDF Mazgajski T. D., Rejt Ł. 2005. Forest fragment size affects edge effect in nest predation — experiment with artificial nests. Polish Journal of Ecology 53: 233–242. PDF Rejt Ł., Gryczyńska-Siemiątkowska A., Rutkowski R., Malewska A. 2005. Does egg sex ratio in urban kestrels (Falco tinnunculus) differ from parity? Polish Journal of Ecology 53: 545–552. PDF Rejt Ł. 2005. Utilisation of unhatched eggs by urban Kestrels (Falco tinnunculus). Buteo15: 31–35. PDF Rutkowski R., Rejt Ł., Gryczyńska-Siemiątkowska A., Jagołkowska P. 2005. Urbanization gradient and genetic variability of birds — example of kestrels in Warsaw. Berkut 14: 130–136. PDF Rejt Ł. 2006. Does larder-hoarding affect the condition of chicks in urban Kestrels? Biologia (Bratislava) 61: 241–244. PDF Rutkowski R., Rejt Ł., Szczuka A. 2006. Analysis of microsatellite polymorphism and genetic differentiation in urban and rural kestrels Falco tinnunculus. Polish Journal of Ecology 54: 473–480. PDF Mazgajski T. D., Rejt Ł. 2006. The effect of forest patch size on the breeding biology of the great spotted woodpecker Dendrocopos major. Annales Zoologici Fennici 43: 211–220. Rutkowski R., Mazgajski T. D., Rejt Ł. 2006. Cross-species amplification of microsatellite loci in woodpeckers Picidae. Annales Zoologici 56: 819–826. PDF Żmihorski M., Rejt Ł. 2007. Weather-dependent variation in the cold-season diet of urban Kestrels Falco tinnunculus. Acta Ornithol. 42: 107–113. PDF Rejt Ł., Mazgajski T., Kubacki R., Kieliszek J., Sobiczewska E., Szmigielski S. 2007. Influence of radar radiation on breeding biology of tits (Parus sp.). Electromagnetic Biology and Medicine 26: 235–238.