Small-billed Elaenia vs Lesser Elaenia

In short

The Small-billed Elaenia and Lesser Elaenia are both small tyrant flycatchers with subtle differences. The Small-billed Elaenia has a shorter bill and a distinctive third wingbar, while the Lesser Elaenia lacks this feature. Vocalizations are a more reliable way to distinguish them in the field.

Identification tips

• Check the bill length: Small-billed Elaenia has a shorter bill.
• Look for the third wingbar: Present in Small-billed Elaenia, absent in Lesser Elaenia.
• Listen for vocalizations: Use voice as a key differentiator.
• Consider habitat overlap: Both species can be found in similar open areas.

Size

Both species are similar in size, making structural differences like bill length more critical for identification.

Plumage

The Small-billed Elaenia has grayer underparts and a third wingbar, whereas the Lesser Elaenia is more uniformly colored without the third wingbar.

Behaviour

Both species are active and can be vocally conspicuous, often seen in similar behaviors.

Habitat

Both species can be found in open areas such as parks. Their habitat preferences overlap significantly.

Voice

Voice is a more reliable separation between the two species, though specific vocal differences are not detailed here.