Family New World Blackbirds (Icteridae)

Endangered

Yellow-shouldered Blackbird (Agelaius xanthomus)


Taxonomy

French: Carouge de Porto Rico German: Gelbschulterstärling Spanish: Sargento puertorriqueño
Taxonomy:

Icterus xanthomus

P. L. Sclater

, 1862,

Mexico; error = Puerto Rico

.

Sister to A. humeralis#R. Two subspecies recognized.

Subspecies and Distribution
  • A. x. xanthomus (P. L. Sclater, 1862) – local in Puerto Rico; formerly widespread.
  • A. x. monensis Barnés, 1945 – Mona I and Monito I, off W Puerto Rico.
  • Descriptive notes

    20–23 cm; male average 41 g, female average 35 g. Male nominate race is black with bluish gloss; lesser and median upperwing-coverts yellow (tips of medians sometimes... read more

    Voice

    Song a rasping nasal “nyaaaaaa”, by both sexes, sometimes by several individuals in... read more

    Habitat

    Restricted to mangroves (Avicennia nitida, Rhizopora mangle, Laguncularia... read more

    Food and feeding

    Diet mainly insects, particularly moths (Lepidoptera) and crickets (Gryllidae); takes nectar from flowers of Erythrina, Inga... read more

    Breeding

    Season Apr–Aug; on Mona I (race monensis) more protracted, Feb–Nov. Monogamous. Nests in small colonies (often 4... read more

    Movements

    Apparently resident.

    Status and conservation

    ENDANGERED. Restricted-range species: present in Puerto Rico and the Virgin Islands EBA. Uncommon to rare, and local. Nominate race formerly occurred throughout Puerto Rico,... read more

    Recommended citation

    Fraga, R. (2019). Yellow-shouldered Blackbird (Agelaius xanthomus). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/62301 on 25 April 2019).