Green-backed Trogon vs Guianan Violaceous Trogon

In short

The Green-backed Trogon and Guianan Violaceous Trogon are similar in size and structure, but differ in plumage and vocalizations. The Green-backed Trogon has a distinctive iridescent green back and purplish-blue rump, while the Guianan Violaceous Trogon features more uniform violet tones. Both species inhabit similar forested environments, but their calls are distinct.

Identification tips

• Look for the iridescent green back and purplish-blue rump on the Green-backed Trogon.
• Note the pale blue orbital ring on the Green-backed Trogon.
• Listen for the call: Green-backed Trogon has a series of rapid, evenly spaced notes.
• Check habitat: Both species can be found in similar forested environments, so rely more on visual and auditory cues.

Size

Both species are similar in size, typical of trogons, with no significant differences noted in their structure.

Plumage

The Green-backed Trogon male has an iridescent green back, purplish-blue rump, and black head with a pale blue orbital ring. The female is duller with gray replacing the green and blue tones. The Guianan Violaceous Trogon generally exhibits more uniform violet tones with less contrast between the back and rump.

Behaviour

Both species are cavity nesters, often using termitaria or decaying wood. They share similar foraging behaviors, typical of trogons, involving sallying from perches to catch insects.

Habitat

Both species are generalists, found in primary and secondary forests, forest edges, and plantations up to 1,000 meters. They are often seen in similar habitats.

Voice

The Green-backed Trogon produces a series of 15-20 rapid, evenly spaced notes. In contrast, the Guianan Violaceous Trogon's call details are less specific but are generally distinct enough from the Green-backed Trogon's calls.