It means black or dark throat. It has a black or dark neck. It is one of the common names of a migratory bird. It is also known as bluish warbler, ? chipe blue slate , ? blue and black chipe, blue-backed warbler, black throat blue stilt and black throat blue bijirita. It is a species of bird in the Parulidae family. Its scientific name is Setophaga caerulescens. It migrates in winter to the Caribbean. It is a way of calling those who suffer from diphtheria.
