Red-naped Trogon vs Diard's Trogon

In short

The Red-naped Trogon and Diard's Trogon are both medium-sized trogons found in Southeast Asia, often in similar habitats. The most reliable field mark is the red nape of the Red-naped Trogon, which is absent in Diard's Trogon. Both species have similar body structures, but their plumage and vocalizations can help distinguish them.

Identification tips

1. Look for the red nape on the Red-naped Trogon. 2. Note the intensity of the red underparts; Red-naped is more vibrant. 3. Observe the habitat; both prefer dense forests, but check for subtle differences in forest type. 4. Listen for calls, but use caution as they are similar.

Size

Both species are similar in size, typical of medium-sized trogons.

Plumage

The Red-naped Trogon has a distinctive red nape and a more vibrant red underpart, while Diard's Trogon lacks the red nape and has a more muted red underpart. Both have green backs, but the Red-naped Trogon often appears slightly brighter.

Behaviour

Both species exhibit similar behavior, often perching quietly in the mid-story of forests. They may sally for insects but are generally sedentary.

Habitat

Both species inhabit lowland and hill forests, often in similar regions of Southeast Asia. They prefer dense, humid forests.

Voice

The vocalizations of these species are similar, but the Red-naped Trogon has a slightly more melodious call. However, distinguishing them by sound alone can be challenging.