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Article
L. Siefferman, Auteur ; G. E. Hill, AuteurPlumage coloration has been suggested to serve as an honest signal of benefits that males provide to females. One benefit proposed for females that choose to mate with elaborately colored males is that such males might provide more food resource[...]
Article
L. Siefferman, Auteur ; G. E. Hill, Auteur ; F. S. Dobson, AuteurMale eastern bluebirds Sialia sialis have striking ultraviolet (UV)-blue coloration on their heads, backs, rumps, wings, and tails and bold chestnut coloration on their breasts. These colored areas are ornaments that correlate with pairing date [...]
