Eye size in birds and the timing of song at dawn

Why do different species of birds start their dawn choruses at different times? We test the hypothesis that the times at which different species start singing at dawn are related to their visual capability at low light intensities. Birds with large eyes can achieve greater pupil diameters and hence,...

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Veröffentlicht in:	Proceedings of the Royal Society. B, Biological sciences Biological sciences, 2002-04, Vol.269 (1493), p.831-837
Hauptverfasser:	Thomas, Robert J., Széskely, Tamás, Cuthill, Innes C., Harper, David G. C., Newson, Stuart E., Frayling, Tim D., Wallis, Paul D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals Bird songs Birds Circadian Rhythm Dawn Chorus Eye - anatomy & histology Eye - radiation effects Eye Size Eyes Light Intensity Luminous intensity Photic Stimulation Photoperiod Phylogenetics Phylogeny Pupil Singing Song Songbirds Songbirds - anatomy & histology Songbirds - physiology Time Factors Vocalization, Animal - physiology
Online-Zugang:	Volltext
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