Warbler Fidelity to their Mates Based on Caterpillar Numbers
Ithaca, N.Y.—It’s long been thought that many birds make decisions during the breeding season—such as whether to attempt nesting twice with their mate, or whether to cheat on their mate—based on the other birds around them, or social factors (breeding density, or how much competition there is for mates).
New research, published Wednesday in the journal Proceedings of the Royal Society of London B: Biological Sciences, now shows that Black-throated Blue Warblers are reading cues from their surrounding environment to make decisions on when to remain faithful and when to be promiscuous. The study found these decisions can be based on food availability. Read more
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