Little Auk vs Greenish Elaenia

In short

The Little Auk and Greenish Elaenia are vastly different in appearance and habitat, making them unlikely to be confused in the field. The Little Auk is a small seabird with a black and white plumage, while the Greenish Elaenia is a small passerine with greenish tones. Their behaviors and habitats are also distinct, with the Little Auk being marine and the Greenish Elaenia inhabiting forests.

Identification tips

• Location: Little Auk in Arctic marine areas; Greenish Elaenia in tropical forests.
• Plumage: Look for black and white in Little Auk vs. greenish tones in Greenish Elaenia.
• Behavior: Little Auk in flocks on water; Greenish Elaenia in trees.
• Size: Little Auk is larger and chunkier than the slender Greenish Elaenia.

Size

The Little Auk is a small seabird, but larger than the Greenish Elaenia, which is a small passerine.

Plumage

The Little Auk has a striking black and white plumage, with a black head and back and white underparts. In contrast, the Greenish Elaenia has a more subdued greenish-gray plumage, with no stark color contrasts.

Behaviour

Little Auks are often seen in large flocks on the ocean, diving for food. Greenish Elaenias are solitary or in pairs, flitting through forest canopies.

Habitat

Little Auks are found in Arctic marine environments, often near cliffs. Greenish Elaenias inhabit tropical and subtropical forests, far from the sea.

Voice

The Little Auk has a variety of calls, often heard in colonies, while the Greenish Elaenia has a distinctive, repetitive song typical of flycatchers.