silver gull vs gaivota-maria-velha

The Silver Gull and Brown-hooded Gull can be distinguished by their head coloration and wing patterns. The Silver Gull typically has a white head, while the Brown-hooded Gull sports a powdery brown half-hood during the breeding season. Additionally, the Brown-hooded Gull has distinctive white outer primaries with black tips.

Look for the head color: Silver Gulls have white heads, while Brown-hooded Gulls have a brown half-hood in breeding plumage. Check the wing pattern: Brown-hooded Gulls have white outer primaries with black tips, visible from above.

The Silver Gull generally has a white head, whereas the Brown-hooded Gull features a powdery brown half-hood in alternate plumage. The Brown-hooded Gull also has white outer primaries with black tips, which contrasts with the Silver Gull's more uniform wing coloration.