Small-billed Elaenia vs Large Elaenia

The Small-billed Elaenia and Large Elaenia are similar in appearance but can be distinguished by size and specific plumage features. The Large Elaenia is marginally larger and typically shows almost no crest, while the Small-billed Elaenia has a shorter bill and grayer underparts. Both species have three wing bars, but the Large Elaenia's crest is less pronounced.

1. Size: Look for the marginally larger size of the Large Elaenia. 2. Crest: Observe the crest; the Large Elaenia has almost no crest, while the Small-billed Elaenia may show a more defined one. 3. Bill: Note the shorter bill of the Small-billed Elaenia. 4. Underparts: Check for grayer underparts in the Small-billed Elaenia. 5. Wing Bars: Both species have three wing bars, but this is not a distinguishing feature.

The Large Elaenia is marginally larger than the Small-billed Elaenia.

Small-billed Elaenia has grayer underparts and a shorter bill. Both species show three wing bars, but the Large Elaenia has almost no crest and little or no white on it.

Both species can be found in similar habitats, such as edges and parks, but the Large Elaenia is more widespread across central and eastern Brazil and the Amazon Basin during non-breeding season.

Voice is a more reliable separation between these species, but specific vocal differences are not detailed here.