Bird song is a form of advertisement, sending two messages to other birds of the same species. One message is a form of ...
Birds sing the most about an hour before dawn, when the air is at its stillest. Theoretically, this enables sounds to travel ...
Source: fir0002, via Wikimedia Commons. Traditionally, birdsong has been viewed as a male trait, and this bias has dominated research on the behavior. “For a long time, scientists thought that female ...
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