Blue-black Grassquit
NameBlue-black Grassquit
Common NameBlue-black Grassquit
Scientific NameVolatinia jacarina
FamilyThraupidae
Wingspan (cm)13
Length (cm)10.5
Weight (g)9
Plumage DetailsAdult males are entirely iridescent blue-black, appearing deep blue or purplish-black depending on the light. They have a small, conical, silvery-gray bill. Females are duller, streaky brown with a paler underside.
Vocalization / CallIts song is a high-pitched, buzzy 'tsee-tsee-tsee' or 'tsip-tsip-tsip' often given during its characteristic jumping display. Calls include sharp 'tsit' notes.
Primary Dietgranivore
Primary Habitatsgrassland, urban
Conservation Statusleast-concern
Geographic RangeWidespread throughout much of Central and South America, from southern Mexico south to northern Argentina and Uruguay.
Identifying Featuressmall size, glossy blue-black plumage (male), conical silvery bill, distinctive jumping display (male)
Description
A small, stocky, finch-like bird, the male Blue-black Grassquit is entirely glossy blue-black. It is known for its distinctive jumping display during courtship, where it leaps vertically from a perch while singing.
