@lyncia do they do the variant of the awkward don't-run-into-each-other dance with them both lowering then heightening their frequencies until one of them just stops?
@lyncia Do you mean something like that other study about why people say birds in cities are more annoying that found that they're singing at a higher frequency within cities than outside?
@lyncia do they do the variant of the awkward don't-run-into-each-other dance with them both lowering then heightening their frequencies until one of them just stops?