If you are talking about the Eurasian Collared Dove, they were not "introduced" so much as they migrated, but they are everywhere in the southwest. Never saw one until about ten years ago, and now there are reports of guys shooting 100 birds in a day. Somewhat unlike mourning doves and whitewings, the Eurasians seem to congregate in town and around habitated areas. Even out in the country, the Eurasions will be sitting in the trees and on the lines around farmhouses, while the mournings and whitewings will be roosting in the orchards and along the river banks. There is some speculation that they are interbreeding with other doves, and the two game wardens that I have discussed this with said that the "collar" on the neck will be the deciding factor if there is any question about whether you have a game or non-game bird in your vest. There is a lot of meat on these birds and they taste just like any other dove. Good burritos. If you can find them, they are relatively easy to shoot because of their slow, straight flight. Like pigeons, if you shoot and miss, they will often circle back to get to their favorite roost.
