Mouette tridactyle vs Chardonneret jaune

The Black-legged Kittiwake and the American Goldfinch are easily distinguished by their size and habitat preferences. The Kittiwake is a seabird with a predominantly white and grey plumage, while the Goldfinch is a small, colorful songbird often found in fields and gardens.

Size and habitat are the most reliable indicators: Kittiwakes are larger and found near the sea, while Goldfinches are smaller and found in terrestrial habitats. Plumage differences are also notable: look for the Kittiwake's grey wings and the Goldfinch's bright yellow breeding plumage.

The Black-legged Kittiwake is significantly larger than the American Goldfinch.

The Black-legged Kittiwake has a white body with grey wings and a black-tipped tail, whereas the American Goldfinch is known for its bright yellow plumage during the breeding season and more muted tones in the nonbreeding season.

Black-legged Kittiwakes are typically found in coastal and marine environments, while American Goldfinches are more common in open fields, gardens, and areas with abundant thistle plants.