Crested Coua

About the crested coua

The crested coua is a medium-sized bird in the cuckoo family, Cuculidae, and it lives nowhere in the wild but Madagascar. It belongs to a small, distinctive group: the subfamily Couinae contains only one genus, Coua, with nine living species, and every one of them is found only on that island. Three of the nine, including the crested coua, spend their lives in trees; the other six live mostly on the ground. Taxonomically, couas sit inside the order Cuculiformes alongside cuckoos and roadrunners.

The bird's coloring is its calling card. Adults have a greenish-gray back, a white abdomen, and a rufous-colored chest, with brown eyes and a black bill. A long, purplish-blue tail tipped in white trails behind them, and short, rounded wings make them easy to pick out in flight. The most memorable features, though, are on the head: a prominent grey crest and a bare patch of skin around each eye in bright turquoise and blue. Four subspecies are recognized — Coua cristata cristata, C. c. dumonti, C. c. pyropyga, and C. c. maxima — and males and females look alike. Young birds are paler, with a shorter crest and none of the adult's colorful eye-ring, and hatchlings are born naked and helpless, with striking red-and-white "bullseye" markings inside the mouth that are thought to guide parents feeding them in low light.

In the wild, crested couas are the most widespread coua species, spread across roughly 562,000 square kilometers of Madagascar's coastal regions. They favor forest layers more than five meters up, building nests around nine meters off the ground on average, and they can be found from sea level to about 900 meters in elevation, most commonly around 700 meters. Despite their bright markings, the greenish-gray body blends into shadow well enough that the birds — common as they are — can be surprisingly hard to spot.

Behavior and diet

Crested couas are, by cuckoo-family standards, poor flyers. Rather than sustained flight, they move through the canopy by hopping from branch to branch, aided by a reversible third toe that gives them extra grip on narrow perches. Their long tail helps with balance as they bounce along. They are secretive birds, generally traveling in small groups of three to five outside the breeding season, and while they don't form true flocks, they will sometimes tag along with mixed-species groups moving through the forest.

Vocally, crested couas are anything but shy. They produce several distinct calls, including a piercing sound described as a "laser gun call" and a doubled, wooden "touk-touk." Other calls sound like "koa-koa-koa" or a longer "guay-guay-guay-guay-gwuck." Like many birds, they call more around sunset, sometimes joining a chorus of other species, and they raise their crest while vocalizing. Their calls can also signal that a predator — typically a fossa, hawk, or eagle — is nearby.

Breeding pairs are monogamous, and unlike some of their cuckoo relatives, crested couas do not practice brood parasitism; both parents build the nest from twigs, hide it in trees or bushes, and share incubation of the two white eggs. Chicks fledge around two weeks old. Because adults can live up to 15 years in captivity, the species can afford a small brood size and a fairly low overall reproductive rate — but a short rearing period means a pair can raise multiple clutches across a breeding season that runs from September to March. Feeding is opportunistic and broad: arthropods, fruit, berries, snails, chameleons, leaves, and seeds all make the menu, with the birds essentially taking whatever appropriately sized food they encounter.

Range and habitat

The crested coua's entire wild range is Madagascar, where it is the most widely distributed of the island's nine coua species. Its stronghold is the coastal regions, particularly littoral and deciduous forests, though it also uses more open habitat such as savannas and brushland, and will occasionally turn up in mangroves and palm stands. It tends to avoid deciduous shrubland on its own, preferring a patchwork of forest mixed with cropland.

Elevation-wise, the species ranges up to about 900 meters but is most frequently seen closer to 700 meters. Exact population numbers are unknown, though the bird's overall range is estimated at 562,000 square kilometers along Madagascar's coast. As an arboreal species, it relies on the upper forest layers — above five meters — for moving around, feeding, and nesting.

Conservation status

The crested coua is classified as Least Concern (LC), reflecting a population that is currently considered stable. That said, the species is believed to be in decline due to habitat loss and degradation, along with hunting pressure — it is hunted by people primarily for meat. In the wild, its main natural predators are fossas, hawks, and eagles. No specific protection programs are named here beyond its general conservation listing.