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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.
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, subphylum Vertebrata, class Aves, order Passeriformes, family Icteridae.
References in periodicals archive ?
For the grackle group and probably other species, it's "just not the case," Price says.
The resulting rule changes allowed DFWI to hire falconers to help tackle the grackle problem and created a national falconry-based pest control industry in the process.
Great-tailed grackles were studied 10-26 Mar 2006 at five study sites in Austin, Texas and one study site in Houston, Texas, and a total of 75 observations were made.
This identification guide, one of a beautifully produced series from Helm - shows them as widely varied, from all-black like some of the grackles, to the vivid yellow and orange orioles (including the Baltimore or northern oriole which sometimes turns up in Britain).
Foraging grackles are common on the floodplain during the summer.
Habitats without top-level predators, such as coyotes, foxes, mountain lions, and bobcats, support a host of second-level predators and parasites, such as house cats and dogs, raccoons, grackles, jays, crows, and other nonforest species.
Ordered by city officials to get rid of the pigeons that were creating a nuisance on a vacant lot near his home, Van Fossan had killed two common grackles and two mourning doves with strychnine-laced corn.
Some songbirds, such as common grackles and yellow-rumped warblers, were observed gleaning insects from the edge of the pond.
12: The early spring bird chorus grows as grackles, starlings, blackbirds and blue jays increase their conversations.
We took measurements of: American Goldfinches (n = 50 specimens measured), Black-capped Chickadees (n = 26), Common Grackles (n = 57), Downy Woodpeckers (Picoides pubescens, n = 35), House Finches (Haemorhous mexicanus, n = 25), House Sparrows (Passer domesticus, n = 50), Mourning Doves (Zenaida macroura, n = 21), Northern Cardinals (n = 50), Tufted Titmice (Baeolophus bicolor, n = 23), and White-breasted Nuthatches (Sitta carolinensis, n = 26).
Cranes, pheasants, blackbirds and grackles are among the most common species that find newly planted corn, rice, or sunflower seed to be an attractive food source.