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Infos on this bird.
A familiar sight on suburban lawns, the Common Grackle can be recognized by its iridescent purple and bronze plumage and long, keel-shaped tail. It's expanding its range into the far West, but is most common in the East.
Iridescent black all over.
Long tail, keel-shaped in flight.
Size: 28-34 cm (11-13 in)
Wingspan: 36-46 cm (14-18 in)
Weight: 74-142 g (2.61-5.01 ounces)
Female slightly smaller and less glossy.
Song a harsh, unmusical "readle-eak," like a rusty gate. Call a sharp, harsh "chack."
Abundant and widespread, extending its range west. Eastern populations declining from an all-time high that occurred around 1970.
Quiscale bronzé (French)
Zanate norteño (Spanish)
The Common Grackle is an opportunistic forager, taking advantage of whatever food sources it can find. It will follow plows for invertebrates and mice, wade into water to catch small fish, and sometimes kill and eat other birds at bird feeders.
The Common Grackle commonly engages in anting, allowing ants to crawl on its body and secrete formic acid, possibly to rid the body of parasites. In addition to ants, it has been seen using walnut juice, lemons and limes, marigold blossoms, choke cherries, and mothballs in a similar fashion.
The Common Grackle has benefited from human activities. The clearing of the Eastern forests was to its liking. The expansion of agriculture, along with the use of mechanical crop harvesters, improved overwinter survival by increasing the supply of waste grain. In the West, the Common Grackle has moved into new areas by following the planting of ornamental trees.
Source : http://www.birds.cornell.edu/AllAboutBirds/BirdGuide/Common_Grackle.html
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