Blue-black Grassquit illustration
Birdsong field guide

Blue-black Grassquit

Volatinia jacarina

The Blue-black Grassquit is a small, gregarious tanager relative famous for the male's persistent, rhythmic vertical leaping displays. It is a common and widespread inhabitant of open grassy environments across the Neotropics.

What it sounds like

A short, explosive, and buzzy 'tse-ee-u' or 'tiziu' produced at the apex of the male's jump.

Reference call, compare with what you heard
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Rec. Tristan Guillebot de Nerville · French GuianaCC BY-NC-SAXeno-canto

Field notes

  • Males perform a signature 'jumping' display, leaping up to half a meter in the air and landing back on the same perch while singing.
  • The species is the sole member of the genus Volatinia, occupying a unique niche among the seed-eating tanagers.
  • Its common Brazilian name, 'Tiziu,' is an onomatopoeia reflecting the explosive, buzzy sound of its brief song.
  • During the male's leap, flashes of white underwing coverts are revealed, contrasting sharply with its otherwise glossy blue-black plumage.
  • While primarily granivorous, they are known to feed opportunistically on insects caught in flight or gleaned from grass stems.
Habitat
Grasslands, agricultural fields, savannas, and disturbed weedy areas.
Range
Southern Mexico through Central America to northern Argentina and Uruguay.
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