Invaders

In 1974, fewer than 50 Eurasian Collared Doves escaped captivity in Nassau, New Providence, Bahamas.^[10] From the Bahamas, the species spread to Florida, and is now found in nearly every state in the US, as well as in Mexico.^[11][12] 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.^[13] This is more than double the rate of 45 km (28 mi) per year observed in Europe.^[14] As of 2012, few negative impacts have been demonstrated in Florida, where the species is most prolific.^[15][16] However, the species is known as an aggressive competitor, and there is concern that as populations continue to grow, native birds will be outcompeted by the invaders.^[15] However, one study found that Eurasian collared doves are not more aggressive or competitive than native mourning doves, despite similar dietary preferences.^[17]

The plumage is generally light gray-brown and lighter and pinkish below. The wings have black spotting, and the outer tail feathers are white, contrasting with the black inners. Below the eye is a distinctive crescent-shaped area of dark feathers. The eyes are dark, with light skin surrounding them

Edited by steve(ill) - 27 Sep 2018 at 9:19pm