Grayish baywing

The grayish baywing (Agelaioides badius), formerly known as the bay-winged cowbird, is a species of bird in the family Icteridae. It is currently placed in the genus Agelaioides but has traditionally been placed in the genus Molothrus. It is found in the northern half of Argentina, Bolivia, Uruguay, Paraguay and southern and central Brazil, The isolated population in north-eastern Brazil is usually now considered a separate species, the pale cowbird or pale baywing (Agelaioides fringillarius). The greyish baywing has been recorded as a vagrant in Chile.[2]

Grayish baywing
A. b. badius, Pantanal, Brazil
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Class: Aves
Order: Passeriformes
Family: Icteridae
Genus: Agelaioides
Species:
A. badius
Binomial name
Agelaioides badius
(Vieillot, 1819)
Synonyms

Molothrus badius (Vieillot, 1819)

Description and behavior

It has a total length of approximately 18 cm (7 in). It is overall ashy-brown with contrasting black lores and rufous wings. The taxon fringillarius has more black in the face and is overall more rufescent (less ashy).

It is social and commonly seen in small groups. Unlike the "true" cowbirds in the genus Molothrus, this species is not a brood parasite. In contrast, the screaming cowbird is a brood parasite of the grayish baywing, and while adult screaming cowbirds are overall blackish, juvenile screaming cowbirds closely resemble grayish baywings.

Habitat and status

It is found in a wide range of semi-open habitats, including scrub and light woodland. It is generally fairly common, and consequently considered to be of least concern by BirdLife International and IUCN.

References
  1. BirdLife International (2017). "Agelaioides badius". IUCN Red List of Threatened Species. 2017: e.T103794964A119445141. doi:10.2305/IUCN.UK.2017-3.RLTS.T103794964A119445141.en. Retrieved 12 November 2021.
  2. Barros, Rodrigo (2015). "El tordo bayo de Curicó" [The curico's grayish baywing] (PDF). La Chiricoca (in Spanish) (19): 43, note in a Molothrus rufoaxillaris-related paper.

Bibliography
  • Ridgely, R. S.; & Tudor, G. (1989). The Birds of South America vol. 1 - The Oscine Passerines. Oxford University Press. ISBN 0-19-857217-4
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