(redirected from common grackles)
Also found in: Dictionary, Thesaurus, Medical.


common name applied to some members of the New World family Icteridae, which also includes blackbirds, orioles, meadowlarks, cowbirds, and others. The plumage of the purple, or common, grackle of the Atlantic coastal region is black with metallic hues, iridescent in the sunlight. It feeds on grain and harmful insects, but it is a cannibalistic nest robber. Grackles invade cities and roost in huge flocks. The bronzed grackle, which interbreeds with the purple, is found further inland and W to the Rocky Mts.; in the South are found the Florida and boat-tailed grackles, in Texas and Mexico the great-tailed grackles, or jackdaws. Grackles are classified in the phylum ChordataChordata
, phylum of animals having a notochord, or dorsal stiffening rod, as the chief internal skeletal support at some stage of their development. Most chordates are vertebrates (animals with backbones), but the phylum also includes some small marine invertebrate animals.
..... Click the link for more information.
, subphylum Vertebrata, class Aves, order Passeriformes, family Icteridae.
References in periodicals archive ?
4) Fish Crow (Corvus ossifragus) 1 1 1 American Robin (Turdus migratorius) 7 1 1 Gray Catbird (Dumetella carolinensis) 1 0 0 Northern Mockingbird (Mimus polyglottos) 2 1 1 Cedar Waxwing (Bombycilla cedrorum) 1 1 1 Northern Cardinal (Cardinalis cardinalis) 1 0 0 Common Grackle (Quiscalus quiscula) 3 3 2 House Finch (Carpodacus mexicanus) 2 0 0 House Sparrow (Passer domesticus) 6 5 3 Total all species 193 156 (80.
The highest priority was placed on corvids, raptors, and House Sparrows (Passer domesticus), while low priority was given to Rock Doves (Columba livia), European Starlings (Sternus vulgaris), and Common Grackles (Quiscalus quiscula).
The test detected WNV in [greater than or equal to]50% of RT-PCR-positive birds of the following species: American Kestrels (Falco s7)arverius) (3/4), Northern Cardinals (Cardinalis cardinalis) (4/6), Common Grackles (3/6), and House Finches (Carpocus mexicanus) (7/7) but was unable to detect WNV in RTPCR-positive Red-tailed Hawks (Buteo jamaicensis) (0/10) and Great Horned Owls (Bubo vitginianus) (0/12).
The five most competent species were passerines: Blue Jay (Cyanocitta cristata), Common Grackle (Quiscalus quiscula), House Finch (Carpodacus mexicanus), American Crow (Corvus brachyrhynchos), and House Sparrow (Passer domesticus).
We confirmed susceptibility to orally acquired WNV infection in Great Homed Owl, American Crow, Common Grackle, House Finch, and House Sparrow.
These species include all the corvids tested, as well as House Sparrow and Common Grackle, two abundant passerine bird species likely to be important reservoir hosts in some locations, and Ring-billed Gull.