Sound Recording and Ethological Data on Vitelline Warblers (S. vitellina) on Little Cayman Island, 2023

The Vitelline Warbler (Setophaga vitellina) is an understudied species endemic to a few islands in the western Caribbean. Little is known beyond its phylogenetic relationship to other New World warblers. We used island-wide surveys and bioacoustic recordings to investigate the distribution, vocalizations, and ecology of S. vitellina across a significant portion of the species’ range on Little Cayman Island. We recorded 417 songs from 91 individuals and analyzed the length, frequency, and shape of various song components. We observed and characterized high variation in the composition and character of songs.