Montezuma Oropendola

The Montezuma Oropendola (Psarocolius montezuma) is a New World tropical icterid bird.

The sexes are very different in size; the male is 50 cm long and weighs 520 g; the smaller female is 38 cm long and weighs 230 g.

It is a colonial breeder which builds a hanging woven nest of fibres and vines, 60–180 cm long, high in a tree. Each colony has a dominant male, which mates with most of the females following an elaborate bowing display.