Agelaius xanthomus
The Yellow-shouldered Blackbird, or Mariquita de Puerto Rico, is a striking passerine endemic to Puerto Rico, instantly recognizable by the bright yellow epaulets (shoulder patches) that contrast sharply with the glossy black plumage of the male. Females, though smaller and duller, exhibit dusky brownish-black feathers often streaked, with a much paler or absent yellow shoulder. Measuring approximately 20-23 cm (8-9 inches) in length with a wingspan of around 35-40 cm and weighing 35-45g, thi...
Primarily inhabits coastal dry forest, mangrove swamps, urban parks, and agricultural areas, generally at low elevations close to water sources.
Primarily insectivorous, feeding on crickets, caterpillars, beetles, and spiders, supplemented with seeds, small fruits, and nectar from flowers.
Yellow-shouldered Blackbirds are diurnal and typically forage during the day, often forming mixed-species flocks outside the breeding season, occasionally roosting communally in dense vegetation. Males establish and defend territories with elaborate displays, fanning their tails and prominently p...
The Yellow-shouldered Blackbird is an island endemic, found exclusively in Puerto Rico and its satellite island, Mona Island. Historically, its range encompassed most of the coastal lowlands of Puerto Rico, but today it is restricted to several fragmented populations. Key strongholds include the ...
Endangered
- The Yellow-shouldered Blackbird is endemic to Puerto Rico and Mona Island, found nowhere else in the world. - Its scientific name, *Agelaius xanthomus*, directly translates to 'yellow-shouldered blackbird,' highlighting its most distinctive feature. - Females are considerably duller and smaller...