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Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Archosauromorpha
Cladus: Crurotarsi
Divisio: Archosauria
Cladus: Avemetatarsalia
Cladus: Ornithodira
Subtaxon: Dinosauromorpha
Cladus: Dinosauriformes
Cladus: Dracohors
Cladus: Dinosauria
Ordo: Saurischia
Cladus: Eusaurischia
Subordo: Theropoda
Cladus: Neotheropoda
Cladus: Averostra
Cladus: Tetanurae
Cladus: Avetheropoda
Cladus: Coelurosauria
Cladus: Tyrannoraptora
Cladus: Maniraptoromorpha
Cladus: Maniraptoriformes
Cladus: Maniraptora
Cladus: Pennaraptora
Cladus: Paraves
Cladus: Eumaniraptora
Cladus: Avialae
Infraclassis: Aves
Cladus: Euavialae
Cladus: Avebrevicauda
Cladus: Pygostylia
Cladus: Ornithothoraces
Cladus: Ornithuromorpha
Cladus: Carinatae
Parvclassis: Neornithes
Cohors: Neognathae
Cladus: Neoaves
Cladus: Telluraves
Cladus: Australaves
Ordo: Passeriformes
Subordo: Passeri
Infraordo: Passerida
Superfamilia: Passeroidea
Familia: Icteridae
Genus: Agelaioides
Species: Agelaioides badius
Subspecies: A. b. badius – A. b. bolivianus
Name
Agelaioides badius (Vieillot, 1819)
Synonyms
Agelaius badius (protonym)
Molothrus badius (Vieillot, 1819)
References
Primary references
Vieillot, L.J.P. 1819. Nouveau Dictionnaire d’Histoire naturelle, appliquée aux arts, à l'agriculture, à l'économie rurale et domestique, à la médecine, etc. Par une société de naturalistes et d'agriculteurs. Avec des figures tirées des trois règnes de la nature. Tome 34. 578 pp. + 9 tt. Déterville, Paris. p. 535 BHL Reference page.
Additional references
Johnson, K.P. & Lanyon, S.M. 1999. Molecular systematics of the grackles and allies, and the effect of additional sequence (cyt b and ND2). The Auk 116(3): 759–768 pdf Reference page.
Vernacular names
English: Bay-winged Cowbird
español: Tordo músico
português: Asa-de-telha
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.
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
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.
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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