
1) Blackbird 2) Follower of grazing cattle 3) Herd-following nester 4) New world blackbird
Found on
https://www.crosswordclues.com/clue/cowbird

Cowbirds are birds belonging to the genus Molothrus in the family Icteridae. They are brood parasitic New World birds which are unrelated to the Old World cuckoos, one of which, the common cuckoo, is the most famous brood parasitic bird. The Molothrus genus contains: The non-brood parasitic baywing was formerly placed in this genus; it is now clas...
Found on
http://en.wikipedia.org/wiki/Cowbird

• (n.) The cow blackbird (Molothrus ater), an American starling. Like the European cuckoo, it builds no nest, but lays its eggs in the nests of other birds; -- so called because frequently associated with cattle.
Found on
http://thinkexist.com/dictionary/meaning/cowbird/

any of six or seven species of birds belonging to the family Icteridae (order Passeriformes) that are parasitic egg-layers. Cowbirds forage on the ... [2 related articles]
Found on
http://www.britannica.com/eb/a-z/c/152
Cow'bird` (-bẽrd`)
noun (Zoology) The cow blackbird (
Molothrus ater ), an American starling. Like the European cuckoo, it builds no nest, but lays its eggs in the nests of other birds; -- so called because frequently associated with cattle.
Found on
http://www.encyclo.co.uk/webster/C/177

[
n] - North American blackbird that follows cattle and lays eggs in other birds` nests
Found on
http://www.webdictionary.co.uk/definition.php?query=cowbird
noun North American blackbird that follows cattle and lays eggs in other birds` nests
Found on
https://www.encyclo.co.uk/local/20974

any of several New World blackbirds of the genus Molothrus, esp. M. ater, of North America, that accompany herds of cattle.
Found on
https://www.infoplease.com/dictionary/cowbird
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