Yellow-footed Gull vs Glaucous Gull

The Yellow-footed Gull and Glaucous Gull can be distinguished by leg color and bill size. The Yellow-footed Gull has bright yellow legs and a relatively smaller bill, while the Glaucous Gull has pink legs and a larger, more robust bill. Both species are large gulls, but their habitats and plumage details offer additional clues.

1. Leg color: Yellow-footed Gull has yellow legs; Glaucous Gull has pink legs. 2. Bill size: Glaucous Gull has a larger, more robust bill. 3. Mantle color: Yellow-footed Gull has a darker mantle. 4. Habitat: Consider the geographical location; Yellow-footed is more southern, Glaucous is northern. 5. Wingtips: Glaucous Gull lacks black wingtips seen in Yellow-footed Gull.

Both are large gulls, but the Glaucous Gull is generally bulkier with a larger bill.

The Yellow-footed Gull has a darker mantle and bright yellow legs, whereas the Glaucous Gull is paler overall with pink legs. Adult Glaucous Gulls lack the black wingtips seen in many other gulls, including the Yellow-footed Gull.

Both species are opportunistic feeders, but the Glaucous Gull is more likely to be seen scavenging in colder, northern environments.

Yellow-footed Gulls are typically found in the Gulf of California and nearby coastal areas, while Glaucous Gulls inhabit Arctic and sub-Arctic regions, often near tundra and coastal cliffs.

Vocalizations are not well-documented for the Yellow-footed Gull, while the Glaucous Gull has typical gull calls. Differences in calls are not the most reliable field marks.