Least Auklet vs Parakeet Auklet

In short

The Least Auklet and Parakeet Auklet can be differentiated primarily by their bill shape and facial markings. The Least Auklet has a short, stubby bill with a distinctive bill-knob ornament, while the Parakeet Auklet features a more parrot-like, slightly upturned bill. Both species inhabit similar northern Pacific regions but have distinct plumage and behavioral traits.

Identification tips

1. Bill Shape: Look for the Least Auklet's short, stubby bill with a bill-knob versus the Parakeet Auklet's parrot-like, slightly upturned bill. 2. Facial Markings: Least Auklets have white facial plumes, while Parakeet Auklets do not. 3. Plumage: Note the variability in the Least Auklet's plumage, ranging from white to nearly black, compared to the more uniform dark upper body of the Parakeet Auklet. 4. Size: Parakeet Auklets are slightly larger than Least Auklets.

Size

Both species are small alcids, but the Parakeet Auklet is slightly larger than the Least Auklet.

Plumage

The Least Auklet's plumage varies from white to nearly black on the breast, often with spotted intermediates. In contrast, the Parakeet Auklet has a more uniform dark upper body with a white belly and lacks the extensive spotting seen in the Least Auklet.

Behaviour

Both species are planktivorous and often seen diving for zooplankton. However, the Least Auklet is known for its high-frequency copulation during the pre-laying period.

Habitat

Both species breed on remote islands in the Bering Sea and North Pacific, often in rocky crevices. They share similar oceanic habitats during the non-breeding season.

Voice

Vocalizations are not a primary distinguishing feature between these species in the field.