Bird Guide

Giant Cowbird

Molothrus oryzivorus

Least ConcernOmnivoreForestMedium · 182 g

About the Giant Cowbird

The giant cowbird is a large passerine bird in the New World family Icteridae. It breeds from southern Mexico south to northern Argentina, and on Trinidad and Tobago. It may have relatively recently colonised the latter island. It is a brood parasite and lays its eggs in the nests of other birds.

Text adapted from Wikipedia, licensed CC BY-SA 4.0.

ID tip

The male giant cowbird is 34 cm (13 in) long, weighs 174–242 g (6.1–8.5 oz) and is iridescent black, with a long tail, long bill, small head, and a neck ruff which is expanded in display. The female is smaller, averaging 29 cm (11 in) in length and weighing 144–167 g (5.1–5.9 oz). The female is less iridescent than the male, and the absence of the neck ruff makes her look less small-headed. Juvenile males are similar to the adult male, but browner, and with a pale, not black, bill.

Text from Wikipedia, licensed CC BY-SA 4.0.

What the Giant Cowbird sounds like

Recording: Niels Krabbe · CC BY-SA 4.0 · via xeno-canto
Recording: Niels Krabbe · CC BY-SA 4.0 · via xeno-canto
Recording: Tim Hirsch · CC BY-SA 4.0 · via xeno-canto

Where the Giant Cowbird lives

Regular range

When to see the Giant Cowbird

Peak activity in October · a resident species across most of its range

Easily confused with

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