American Wigeon vs Chiloe Wigeon

In short

The American Wigeon and Chiloe Wigeon can be distinguished by their bill shape and plumage patterns. The American Wigeon has a short, narrow bill and a distinctive white crown stripe, while the Chiloe Wigeon features a more rounded head and lacks the bold white crown.

Identification tips

1. Look for the white crown stripe on the American Wigeon. 2. Note the short, narrow bill of the American Wigeon compared to the Chiloe Wigeon's more rounded head. 3. Observe the bold white wing patch in flight for American Wigeon. 4. Listen for the high-pitched call of the American Wigeon.

Size

Both species are similar in size, typical of medium-sized ducks.

Plumage

The American Wigeon male has a white crown and green patch extending from the eye, while the Chiloe Wigeon displays a more uniform head pattern without the white crown stripe. The American Wigeon also shows a bold white wing patch in flight.

Behaviour

American Wigeons are known for their aggressive feeding behavior, often stealing food from other ducks, while Chiloe Wigeons are less aggressive in this regard.

Habitat

American Wigeons are often found in open-water wetlands and urban areas like golf courses, whereas Chiloe Wigeons are more commonly associated with freshwater lakes and marshes in South America.

Voice

The American Wigeon produces a distinct, high-pitched, three-note call reminiscent of a squeaky toy. The Chiloe Wigeon's vocalizations are less well-documented but are not noted for being similar.