References for ANB 218a Migration and movement (Farner et al. 1981, Holberton and Able 1992, Gwinner 1996, Ramenofsky and Wingfield 2007, Piersma and van Gils 2011, Ramenofsky et al. 2012, Cornelius et al. 2013) Cornelius, J. M., T. Boswell, S. Jenni-Eiermann, C. Breuner, and M. Ramenofsky. 2013. Contribution of endocrinology to the migration life history of birds. General and Comparative Endocrinology. Farner, D. S., R. S. Donham, and M. C. Moore. 1981. Induction of testicular developmment in house sparrows, Passer domesticus, and white-crowned sparrows, Zonotrichia leucophrys gambelii, with very long days and continuous light. Physiological Zoology 54:372-378. Gwinner, E. 1996. Circadian and circannual programmes in avian migration. . J. Exp. Biol. 199:39-48. Holberton, R. and K. P. Able. 1992. Persistence of circannual cycles in a migratory bird held on constant dim light. J Comp. Physiol A 171:477-481. Piersma, T. and J. A. van Gils. 2011. The flexible phenotype, a body centered integration of ecology, physiology and behaviour. . Oxford University Press. Ramenofsky, M., J. M. Cornelius, and B. Helm. 2012. Physiological and behavioral responses of migrants to environmental cues. Journal of Ornithology 153:S181-191. Ramenofsky, M. and J. C. Wingfield. 2007. Regulation of migration. Bioscience 57:135-143.