Molothrus oryzivorus
The Giant Cowbird, Molothrus oryzivorus, stands as the largest of the cowbirds and a striking member of the New World blackbird family (Icteridae). Males, measuring 33-36 cm in length and weighing 180-250 grams, are characterized by their glossy, iridescent purplish-black plumage and a distinctive, inflatable ruff on the nape and upper back, used prominently in courtship displays. Females are slightly smaller (150-190 grams), with a duller, sooty-black plumage, lacking the male's vibrant irid...
Found in open woodlands, forest edges, riparian corridors, plantations, and cultivated areas, often in close proximity to human settlements, primarily at low to mid-elevations below 1500 meters.
Primarily insectivorous, feeding on grasshoppers, beetles, caterpillars, and other arthropods, supplemented with seeds and some fruit; forages mainly on the ground, often near livestock.
Giant Cowbirds are diurnal and highly gregarious, often forming large mixed-species flocks with their host species or other icterids outside the breeding season, roosting communally in trees. Their foraging strategy involves ground gleaning for insects, frequently associating with grazing cattle ...
The Giant Cowbird is a widespread resident throughout the tropical lowlands of Central and South America. Its breeding and year-round range extends from southern Mexico (including Veracruz, Oaxaca, and Chiapas) south through Belize, Guatemala, Honduras, Nicaragua, Costa Rica, and Panama. In South...
Least Concern
- The Giant Cowbird is the largest species of cowbird, making it a prominent presence in its Neotropical habitats. - It is an obligate brood parasite, meaning it lays its eggs in the nests of other species and provides no parental care of its own. - Unlike many other brood parasites, Giant Cowbir...