Crested Coua vs Verreaux's Coua

In short

The best field mark to separate Crested Coua from Verreaux's Coua is the color and extent of the bare skin around the eye: Crested Coua shows a striking blue and turquoise patch, while Verreaux's Coua has a paler blue area. Also, Crested Coua is larger, with a greenish-gray back and rufous chest, and a notably purplish-blue tail with white tips, whereas Verreaux's Coua is smaller, overall mid-grey, with a long, dark grey tail tipped white only on the outer feathers. Both have crests, but Verreaux's Coua's is long and dark-tipped. In flight or perched, focus on tail color and underpart tones for a quick separation. Juveniles of Crested Coua lack the bright eye patch and have a shorter crest, which may cause confusion with Verreaux's, but overall body color and tail pattern remain useful.

Identification tips

1. Bare skin around eye: Crested Coua shows a vivid blue and turquoise patch, while Verreaux's Coua has only pale blue. This is the most reliable mark at close range for adults.
2. Tail color and pattern: Crested Coua has a long, purplish-blue tail with broad white tips, very noticeable in flight or when fanned. Verreaux's Coua has a long, dark grey tail with white limited to the tips of the outer feathers.
3. Underpart color: Crested Coua has a rufous chest and white belly; Verreaux's Coua is whitish on the lower breast and belly but lacks rufous tones.
4. Back and upperparts: Crested Coua is greenish-gray above, blending with foliage; Verreaux's Coua is mid-grey overall, appearing plainer and colder-toned.
5. Crest shape and color: Both species have crests, but Crested Coua's is prominent and grey, while Verreaux's is long and dark-tipped. On a perched bird, look for the dark tip on Verreaux's.
6. Bill color: Both have black bills, so this is not useful for separation.
7. Eye color: Crested Coua has brown eyes; Verreaux's Coua's eye color is not specified, so this is a weak mark.
8. Juvenile confusion: Young Crested Couas lack the bright blue/turquoise eye patch and have a shorter crest, which can make them resemble Verreaux's, but their overall paler coloration and tail pattern (still with white tips) help distinguish them.
9. Size and bulk: Crested Coua is larger and bulkier; Verreaux's Coua is noticeably smaller and slimmer.
10. Flight style: Both are weak flyers, but Crested Coua's longer tail and larger size may make its flight appear heavier and more labored.
11. Habitat and range: If seen outside the southern salt lake region, Verreaux's Coua is highly unlikely. Crested Coua is widespread along Madagascar's coast.
12. Group behavior: Crested Coua may be seen in small groups or mixed flocks; Verreaux's Coua's social habits are less documented but likely solitary or in pairs.
13. Plumage blending: Crested Coua's greenish-gray back provides camouflage in forest shadows, while Verreaux's Coua's mid-grey is plainer and stands out less in green habitats.
14. Tail in flight: Watch for the extent and color of white in the tail when the bird is flying or fanning its tail while perched.
15. Crested Coua's rufous chest: This is unique among the two and visible in good light, especially when the bird is facing you.

Size

Crested Coua is the larger of the two, with a body mass around 147g and a length of 30–44 cm. Verreaux's Coua is described as small among couas, but no precise mass is available. In the field, Crested Coua will look noticeably bulkier and longer-tailed, especially when seen side by side or with experience of both species.

Plumage

Juvenile Crested Couas are paler than adults, with a shorter crest and lacking the vivid blue/turquoise bare skin around the eye, which can make them resemble Verreaux's Coua at a glance. However, even young Crested Couas retain a greener-gray back and a longer, purplish-blue tail with white tips. Adult Crested Coua shows a greenish-gray back, white belly, rufous chest, and a prominent gray crest. Verreaux's Coua is mid-grey overall, with a whitish lower breast and belly, darker flight feathers, and a long, dark grey tail with white only at the tips of the outer feathers. Its crest is long and dark-tipped, and the bare skin around the eye is pale blue (never turquoise). Both have black bills, but Crested Coua's eye is brown, while Verreaux's is not specified. In flight, Crested Coua's white-tipped, purplish-blue tail stands out, while Verreaux's Coua shows a more uniformly dark tail with limited white.

Behaviour

Crested Coua is a weak flyer, often seen hopping between branches high in the canopy, using its reversible third toe for grip and balance. It tends to move in small groups outside the breeding season and is secretive, blending into foliage. Verreaux's Coua is also arboreal but is described as small and likely less conspicuous due to its overall grey coloration. Both species are more often seen perched or moving through trees than in sustained flight.

Habitat

Both species are endemic to Madagascar, but their ranges and preferred habitats differ. Crested Coua is widespread along the coastal regions, found in littoral and deciduous forests, savannas, brushlands, and occasionally mangroves and palms, usually at elevations up to 900m. Verreaux's Coua is much more restricted, reportedly found only near a salt lake in the southern part of Madagascar. Thus, location can be a strong clue: a coua seen outside southern salt lake areas is far more likely to be Crested.