The Eurasian collared dove (Streptopelia decaocto), most often simply called the collared dove, also sometimes hyphenated as Eurasian collared-dove, is a species of dove native to Asia and Europe, and also recently introduced in North America.
The collared dove was introduced into the Bahamas in the 1970s and spread from there to Florida by 1982. It has become invasive; the stronghold in North America is still the Gulf Coast, but it is now found as far south as Puerto Escondido and Tehuantepec in Oaxaca, as far west as California, and as far north as Alaska, Alberta, the Great Lakes, and Nova Scotia. Their relatively early presence in the Cancún area may suggest they arrived there overwater. Some of the more distantly dispersed records may refer to local escapes from captivity. Its impact on other species there is as yet unknown; it appears to occupy an ecological niche between that of the mourning dove and the rock pigeon (also an invasive species in North America). In Arkansas (United States), the species was recorded first in 1989 and since then has grown in numbers and is now present in 42 of 75 counties in the state. It spread from the southeast corner of the state in 1997 to the northwest corner in 5 years, covering a distance of about 500 km (310 mi) at a rate of 100 km (62 mi) per year. This is more than double the rate of 45 km (28 mi) per year observed in Europe
Collared doves typically breed close to human habitation wherever food resources are abundant and there are trees for nesting; almost all nests are within 1 km (0.62 mi) of inhabited buildings. The female lays two white eggs in a stick nest, which she incubates during the night and which the male incubates during the day. Incubation lasts between 14 and 18 days, with the young fledging after 15 to 19 days. Breeding occurs throughout the year when abundant food is available, though only rarely in winter in areas with cold winters such as northeastern Europe. Three to four broods per year is common, although up to six broods in a year has been recorded.
The male's mating display is a ritual flight, which, as many other pigeons, consists of a rapid, near-vertical climb to height followed by a long glide downward in a circle, with the wings held below the body in an inverted "V" shape. At all other times, flight is typically direct using fast and clipped wing beats and without use of gliding.
The collared dove is not wary and often feeds very close to human habitation, including visiting bird tables; the largest populations are typically found around farms where spilt grain is frequent around grain stores or where livestock are fed. It is a gregarious species and sizeable winter flocks will form where there are food supplies such as grain (its main food) as well as seeds, shoots and insects. Flocks most commonly number between ten and fifty, but flocks of up to ten thousand have been recorded.
The song is a coo-COO-coo, repeated many times. It is phonetically similar to the Greek decaocto ("eighteen"), to which the bird owes its zoological name. It also makes a harsh loud screeching call lasting about two seconds, particularly in flight just before landing. A rough way to describe the screeching sound is a hah-hah.
Collared doves cooing in early spring are sometimes mistakenly reported as the calls of early-arriving cuckoos and, as such, a mistaken sign of spring's return.
They are almost always seen in pairs and, like many birds, remain loyal to their mates.
From Wikipedia, the free encyclopedia
Leucistic collared dove (Streptopelia decaocto)
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