cowbird

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cow·bird

 (kou′bûrd′)
n.
Any of various blackbirds of the genus Molothrus, especially the common North American species M. ater, that lay their eggs in the nests of other birds and are often seen accompanying herds of grazing cattle.

[From their habit of staying with cattle.]

cowbird

(ˈkaʊˌbɜːd)
n
(Animals) any of various American orioles of the genera Molothrus, Tangavius, etc, esp M. ater (common or brown-headed cowbird). They have a dark plumage and short bill

cow•bird

(ˈkaʊˌbɜrd)

n.
any blackbird of the genera Molothrus and Schapidura, noted for their brood parasitism, esp. the common North American species M. ater.
[1795–1805, Amer.]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cowbird - North American blackbird that follows cattle and lays eggs in other birds' nestscowbird - North American blackbird that follows cattle and lays eggs in other birds' nests
blackbird, New World blackbird - any bird of the family Icteridae whose male is black or predominantly black
References in periodicals archive ?
Of these species, wood thrushes are the only common cowbird hosts (Hoover and Brittingham, 1993) and it has not been suggested that nest reuse could be a strategy in response to brood parasitism.
At Delta Marsh, blackbirds have consistently been aggressive to cowbird mounts across several studies; however, blackbirds are among the three most common cowbird hosts at this site, although parasitism frequency is variable (Woolfenden et al.