摘要: We postulated that the retinas of bird species are earlier singers more sensitive to low light conditions than sing closer sunrise. The selected were American
Robert J. Thomas, Tamás Széskely, Innes C. Cuthill, David G. C. Harper, Stuart E. Newson, Tim D. Frayling, Paul D. Wallis, Eye size in birds and the timing of song at dawnProceedings of The Royal Society B: Biological Sciences. ,vol. 269, pp. 831- 837 ,(2002) , 10.1098/RSPB.2001.1941