Biology
Acoustic Adaptation Hypothesis and Bird Song Divergence Across Habitats
Quick fact
In a classic study, white-throated sparrows sang lower-pitched, slower songs in dense forests and higher, faster songs in open habitats, matching the prediction of the acoustic adaptation hypothesis.
Why this is interesting
Have you ever noticed that birds in a dense forest sound different from those in an open field? The same species may sing differently in different places—why?