Spectacled Guillemot vs Pigeon Guillemot

In short

The Spectacled Guillemot and Pigeon Guillemot are similar seabirds with subtle differences. The most reliable field mark is the presence of a distinct white 'spectacle' around the eye of the Spectacled Guillemot, absent in the Pigeon Guillemot. Both species share a similar structure, but their plumage and habitat preferences can aid identification.

Identification tips

• Look for the white 'spectacle' around the eye on the Spectacled Guillemot.
• Observe wing patterns in flight: Pigeon Guillemots may show more white.
• Consider location: Spectacled Guillemots are more likely in the Seas of Okhotsk and Japan.
• Listen for vocalizations if possible, noting that Pigeon Guillemots have distinctive whistles.

Size

Both species are similar in size, typical of guillemots, with no significant differences in structure.

Plumage

The Spectacled Guillemot features a prominent white 'spectacle' around the eye, which is absent in the Pigeon Guillemot. Both species have dark plumage overall, but the Pigeon Guillemot may show more white on the wing in flight.

Behaviour

Both species dive for food and are often seen close to shore. They exhibit similar feeding behaviors, probing rocky recesses for benthic prey.

Habitat

Spectacled Guillemots inhabit inshore waters of the Seas of Okhotsk and Japan, while Pigeon Guillemots are found along coastlines from the Chukot Peninsula to the Kurile Islands and further south. Pigeon Guillemots are more widespread and can be found in a variety of coastal habitats.

Voice

Vocalizations are not well-documented for the Spectacled Guillemot, while the Pigeon Guillemot is known for its high-pitched whistles and trills.