The American Pekin Duck is large and solidly built. The body is rectangular as seen from the side and is held at about 40º to the horizontal; the tail projects above the line of the back. The breast is smooth and broad and does not show a pronounced keel. The head is large and rounded, and the neck is thick. The plumage is creamy white, the legs and feet are a yellowish orange. The beak is yellow, fairly short, and almost straight.
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. The success of this common park species has led to its often being considered a pest species because of its depredation of crops and its noise, droppings, aggressive territorial behavior towards both humans and other animals, and its habit of begging for food (caused by human hand feeding).