Canada Goose
![Alaska species birds canada goose](https://uploads.alaska.org/guides/alaska-species-guides/alaska-birds/_960xAUTO_fit_center-center_65_none/alaska-species-birds-canada-goose.jpg)
One of the most familiar of the Goose family, the Canada Goose has a black head and white chinstrap. Believe it or not, this waterfowl was nearly driven to extinction in parts of North America and has made such a resounding recovery that it is now viewed by some to be a pest. Birds tend to choose mates of similar sizes in a process termed 'assortative mating'.