Common Yellowthroats spend much of their time skulking low to the ground in dense thickets and fields, searching for small insects and spiders. Males sing a very distinctive, rolling wichety-wichety-wichety song, and both sexes give a full-sounding chuck note that is easy to learn. During migration, this is often the most common warbler found in fields and edges. It sometimes joins other warbler species in mixed foraging flocks.