This is a preview. Log in through your library . Abstract Male yellow warblers (Dendroica petechia) exhibit extensive variation in the amount and conspicuousness of the sexually distinctive brown ...

This is a preview. Log in through your library . Abstract Emlen and Oring (1977) suggested that monogamy in birds in maintained because of the need for strict biparental care. A corollary of their ...

This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...

A new study has discovered that birds in the Galapagos Islands are changing their behavior due to traffic noise, with those frequently exposed to vehicles showing heightened levels of aggression.

A noisier world makes it challenging for birds, which primarily rely on sound to communicate, and many are forced to change their behavior to cope with their clamorous environment. A recent study ...

This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more information, visit the Smithsonian's ...