Welcome to the American Ornithological Society 2018 Annual Conference. We are pleased to have you join us at the lovely Hilton El Conquistador Resort in Tucson, AZ.
Birds produce a staggering diversity of sounds. The vast majority of research on this topic focuses on high amplitude broadcast song given by males, but studying other acoustic signal types can reveal much about functional avian communication. Many species produce low amplitude vocalizations that have been variously classified as calls and songs, and generally seem to mediate close-distance encounters between rivals or mates. Rock wrens (Salpinctes obsoletus) frequently use a stereotyped low amplitude signal that differs from both broadcast song and typical contact calls. Measurements indicate that these low amplitude vocalizations have significantly less power than broadcast song (p $
