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Parental care in birds : ウィキペディア英語版 | Parental care in birds
Parental care refers to the level of investment provided by the mother and the father to insure development and survival of their offspring. In most birds, parents invest profoundly in their offspring as a mutual effort, making a majority of them socially monogamous for the duration of the breeding season. This happens regardless of whether there is a paternal uncertainty. ==Origin== Birds originally branched from theropod dinosaurs and underwent body miniaturization over a 50 million year period. Changes in anatomy are rearrangement of body mass, adults retain juvenile traits including large brain mass and eyes despite a smaller snout (paedomorphism), and aerial abilities. (Michael S. Y. Lee, Andrea Cau, Darren Naish, and Gareth J. Dyke)〔Sustained miniaturization and anatomical innovation in the dinosaurian ancestors of birds • 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Parental care in birds」の詳細全文を読む
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