Black-headed Trogon vs Gartered Violaceous Trogon

In short

The Black-headed Trogon and Gartered Violaceous Trogon can be distinguished by their head and breast coloration, with the Black-headed Trogon having a black head and the Gartered Violaceous Trogon showing a blackish head with a blue nape. Both species inhabit similar environments, but their vocalizations and subtle plumage differences can aid in identification.

Identification tips

1. Head and Breast Coloration: Look for the black head of the Black-headed Trogon versus the blackish head with a blue nape of the Gartered Violaceous Trogon. 2. Upper Tail and Wing Panel: Note the greener upper tail and barred wing panel of the Gartered Violaceous Trogon. 3. Vocalizations: Listen for the distinct calls, particularly the accelerating clucks of the Black-headed Trogon.

Size

Both species are similar in size, typical of trogons, and size is not a reliable distinguishing feature.

Plumage

The Black-headed Trogon has a black head and neck, while the Gartered Violaceous Trogon features a blackish head with a blue nape and lower edge of the breast. The Gartered Violaceous Trogon also has a greener upper tail and a wing panel densely barred gray and white.

Behaviour

Both species are cavity nesters and may use similar substrates for nesting. The Black-headed Trogon is less solitary, often seen in small groups during the breeding season.

Habitat

Both species are habitat generalists, found in forest edges, plantations, and other open habitats. The Gartered Violaceous Trogon ranges from sea level to 1,800 m, while the Black-headed Trogon is often found in more open habitats like secondary forests and gallery forests.

Voice

The Black-headed Trogon is frequently detected by its loud series of accelerating clucks, resembling the song of the Barred Antshrike. The Gartered Violaceous Trogon's vocalizations are not detailed here, but differences in calls can be a useful field mark.