Scientific Name: Psarocolius montezuma

Spectacular, very large ‘blackbird’ of tropical lowlands. Favors forest edge, open woodland, plantations, semi-open areas with trees; colonies of large pendulous nests adorn tall trees. Male is much larger than female, but sexes look similar: dark rusty overall with a black head, bold yellow sides to the tail, and ornate face and bill patterning. Flies rather directly, with slow, ‘rowing’ wingbeats. Memorable gurgling song sounds like water poured from a bottle.

Often observed in lively colonies, this species is highly social and rarely seen alone, with individuals constantly calling and interacting around nesting trees. Males perform dramatic display flights and vocalizations to attract females, adding energy and movement to the forest edge. Their intricate hanging nests—woven from fibers and grasses—can number in the dozens on a single tree, creating a striking visual spectacle. Feeding on insects, fruit, and nectar, they play an important ecological role while offering one of the most unforgettable birdwatching experiences in tropical Costa Rica.