The Collared Dove - Streptopelia decaocto, is a species  native to Asia and Europe, and also recently introduced in North America.

It is a medium sized dove, distinctly smaller than the Wood Pigeon, similar in length to a Rock Pigeon but slimmer and longer-tailed, and slightly larger than the related Turtle Dove.

The Great Backyard Bird Count charts the explosive geographic expansion of Eurasian collared doves - Streptopelia decaocto. The species has spread quickly since it was introduced in Florida in 1980 and it made new inroads this year. For the first time, Great Backyard Bird Count records of this bird came from British Columbia, Manitoba, and Oregon.