Canada goose

Branta Canadensis

The Canada goose (Branta canadensis) is a large wild goose species with a black head and neck, white patches on the face, and a brown body.

Extremely successful at living in human-altered areas, Canada geese have proven able to establish breeding colonies in urban and cultivated areas, which provide food and few natural predators, and are well known as a common park species.

Like most geese, the Canada goose is primarily herbivorous and normally migratory; it tends to be found on or close to fresh water.

Further reading :

http://en.wikipedia.org/wiki/Canada_goose