Scarlet-rumped Tanager vs Crimson-backed Tanager

In short

The Scarlet-rumped Tanager and the Crimson-backed Tanager can be distinguished by the coloration of their plumage and specific features of the male's bill. The Scarlet-rumped Tanager has a scarlet-red patch from the lower back to the rump, while the Crimson-backed Tanager features scarlet flanks and rump with a deep velvety crimson head and back. The adult male Crimson-backed Tanager also has a distinctive swollen, brilliant white base of the mandible.

Identification tips

1. Look for the scarlet-red patch on the lower back to rump for the Scarlet-rumped Tanager. 2. Check for the deep velvety crimson head and back in the Crimson-backed Tanager. 3. Note the swollen, brilliant white base of the mandible in adult male Crimson-backed Tanagers. 4. Consider the habitat, as Crimson-backed Tanagers are more common in areas with human activity.

Plumage

The Scarlet-rumped Tanager displays a scarlet-red patch on the lower back to the rump, whereas the Crimson-backed Tanager has scarlet flanks and rump that transition into a deep velvety crimson head and back. Females and young of both species are duller, with the Crimson-backed Tanager being dusky red-brown.

Behaviour

Both species are social, often seen in flocks. The Scarlet-rumped Tanager forms loose flocks and does not defend territories, while the Crimson-backed Tanager travels in noisy flocks.

Habitat

Both species are commonly found at forest edges, clearings, and secondary growth. The Crimson-backed Tanager is particularly common in areas with human activity.