(syn. Setophaga Ϯ Kirtland's Warbler S. kirtlandii) L. ager, agri field, land; cantor, cantoris singer < cantare to sing < canere to sing; "l. Field Warblers. Agreocantor ... Type, Sylvicola kirtlandii Baird ... nest, placed on ground ... Frequents low bushes in fields, often on the ground" (Maynard 1907).