Should I Be Worried about Grackle Birds? People residing in the Texas and Florida area of the United States are worst hit by this problem. Grackles walk around lawns and fields on their long legs or gather in noisy groups high in trees, typically evergreens. Adult common grackles have a long and dark bill, pale yellow eyes, and a long tail. Great-tailed grackles are highly social birds. Here, you’d find easy-to-follow methods to control the pest bird problem. Highly independent, intelligent and stubborn, grackles are about 12 inches long and weigh about 4 ounces. … HOUSTON, Texas (KTRK) -- If you live in Texas, you know about grackles. They're taller and longer tailed than a typical blackbird, with a longer, more tapered bill and glossy-iridescent bodies. But the good news is that solutions are available and we will show you how to get started in grackle control. They cover yards and power lines, make downright awful noises, and have been known to make a mess on vehicles. Oh my, what a clattering clammer of clacks, cackles, shrieks and whistles an assemblage of several thousand individuals must make. The video was taken by a store patron in a parking lot in the Meyerland neighborhood of Houston, Texas. The video depicts the flock of black birds, descending from the sky, sitting on cars and shopping carts, swirling in flurries of twittering fury, and making a tremendous amount of noise. In south Texas, along the Rio Grande valley, tens of thousands may assemble in winter roost trees. The common grackle (Quiscalus quiscula) is a large icterid found in large numbers through much of North America. They're taller and longer tailed than a typical blackbird, with a longer, more tapered bill and glossy-iridescent bodies. Grackles walk around lawns and fields on their long legs or gather in noisy groups high in trees, typically evergreens. Common grackles roost in large communal flocks, numbering in the thousands and sometimes in the millions of birds. Yes, you should. Common Grackles are blackbirds that look like they've been slightly stretched. Adults often have an iridescent appearance on their head, especially males. Many of you have seen it: the viral video showing an invasion of grackles. About Grackles. Common Grackles are blackbirds that look like they've been slightly stretched. First described in 1758 by Carl Linnaeus, the common grackle has three subspecies. Grackles live year-round in the southeastern U.S., especially in Texas and Florida, migrating to surrounding northern areas to breed in the summer months.