Rivoli's Hummingbird vs Amethyst-throated Mountain-gem

In short

Rivoli's Hummingbird and the Amethyst-throated Mountain-gem can be distinguished by their throat coloration and size. Rivoli's has a striking metallic green throat, while the Amethyst-throated features a vibrant purple throat. Both species inhabit similar montane forests, but their vocalizations and behaviors offer additional clues.

Identification tips

1. Look for the throat color: Rivoli's has a green throat, while the Amethyst-throated has a purple one. 2. Size: Rivoli's is larger. 3. Behavior: Observe any aggressive territorial displays, more common in Rivoli's. 4. Habitat: Note the specific montane forest location, as ranges might overlap but can differ locally.

Size

Rivoli's Hummingbird is generally larger than the Amethyst-throated Mountain-gem.

Plumage

Rivoli's Hummingbird males have a metallic green throat and a dark, velvety crown, while females have a duller throat. The Amethyst-throated Mountain-gem males display a bright purple throat patch, contrasting with their green upperparts, and females have a more subdued coloration.

Behaviour

Both species exhibit territorial behavior, but Rivoli's Hummingbird is known for being particularly aggressive.

Habitat

Both species are found in montane forests, often at similar elevations, but specific local distributions may vary.

Voice

Vocalizations are not a primary distinguishing feature between these two species, as both have typical hummingbird calls.