|[Note Guidelines] Photographer's Note|
|Molothrus bonariensis (male)|
The Shiny Cowbird, Molothrus bonariensis, is a passerine bird in the New World family Icteridae. It breeds in most of South America apart from the most dense jungles, mountains and deserts, the coldest southernmost regions (e.g. Tierra del Fuego), and on Trinidad and Tobago. It has relatively recently colonised Chile and many Caribbean islands, and has reached the USA, where it is probably breeding in southern Florida. Northern and southernmost populations are partially migratory.
Like most other cowbirds, it is a brood parasite, laying its eggs in the nests of many other bird species. The host’s eggs are sometimes removed, and if food is short their chicks may starve, but larger host species are less affected. The incubation period of 11–12 days is shorter than that of most hosts.
The male Shiny Cowbird is 20.3 cm long, weighs 45 g and is all black with an iridescent purple-blue gloss. The smaller female is 19 cm long and weighs 31 g. Her plumage is dark brown, paler on the underparts. She can be distinguished from the female Brown-headed Cowbird by her longer, finer bill, pale superciilium and stronger face pattern. There is an all-black plumage variation, and the northern subspecies M. b. cabanisii of Panama and northern Colombia is paler than the nominate M. b. bonariensis. Juveniles are like the female but more streaked below.
This abundant and gregarious bird feeds mainly on insects and some seeds, including rice, and forages on the ground or perches on cattle.
aruntp, Miss_Piggy has marked this note useful
Only registered TrekNature members may rate photo notes.
|You must be logged in to start a discussion.|
- [2013-06-17 0:04]
Beautiful bird species. nice clarity and closeup. good work. tfs.
照的太完美了 鳥的顏色清晰 神態特殊 栩栩如生
- [2013-06-17 5:30]
Fantastic photo of this Shiny Cowbird in splendid light and metallic colours. Attractive pose taken from a good low POV and excellent sharpness. Nice contrasting background.
Wow Paulo this bird has beautiful plumage and the colours are gorgeous, emphasised so beautifully in by the sunlight. I like the pose, the point of view and the composition. Thanks for sharing. Best regards.