Greater Scaup vs Common Goldeneye

The Greater Scaup and Common Goldeneye can be distinguished by their head shape and bill characteristics. Greater Scaup have a more rounded head and a broader, bluish bill, while Common Goldeneyes have a steeper forehead and a shorter, triangular bill. These features are most reliable when observed closely.

Head shape and bill: Greater Scaup have a rounded head and broad, bluish bill. Common Goldeneyes have a steep forehead and shorter, triangular bill. Plumage: Look for the white cheek patch on male Common Goldeneyes. Observe closely: These differences are best seen with good lighting and proximity.

Greater Scaup males have a greenish gloss on their head, whereas Common Goldeneye males exhibit a more iridescent greenish-black head with a distinctive white cheek patch.