Nine Birds, One Painted Face

Madagascar’s nine coua species, large terrestrial or arboreal cuckoos, share a family signature: a patch of bare, vividly colored skin around each eye, framed by unusually long eyelashes, above a soft, richly patterned coat of feathers. The species range from the forest floor to the high canopy, and from the humid east to the driest scrub of the south.

A red mouth, and inside it, a map no one else can read.

Their chicks carry a family trait more striking still: strange, spectacular patterns of white or blue spots across the roof of the mouth and tongue, set against a vivid red interior, visible only in the instant a nestling gapes for food, a signal built for a parent’s eye and almost no one else’s.

The arboreal species split cleanly from the ground-dwellers in both diet and behavior. The blue coua and crested coua work methodically along tree trunks and branches, eating insects but also tree gum and resin, sap drawn from species like Albizia polyphylla. The giant coua and running coua, by contrast, behave like a roadrunner or a pheasant, moving fast across open ground in pursuit of insects and small reptiles.

Both groups share one odd habit: on cool mornings, they turn their backs to the sun and expose the bare, near-black skin along their spine to soak up warmth directly, a form of basking closer to what a reptile does than what most birds bother with.

The crested coua’s loud, repeated call from the treetops is one of the defining background sounds of the Malagasy landscape, striking enough that in the island’s northwest it is regularly mistaken for the call of the crowned lemur, Lemur coronatus, an entirely unrelated animal sharing the same forest soundscape.

Those calls rarely stay solitary. A single crested coua’s cry can trigger a chain of responses drawing in fifteen or more birds across a stretch of gallery forest, particularly at dawn and dusk, while different coua species divide up the island’s habitats with real precision, some confined to humid eastern rainforest, others to dry western woodland, and a few pushing into the spiny thickets of the extreme south.

Coua gigas, the giant coua, is the largest member of the whole family, a heavy-bodied ground bird with a short, powerful bill and a long tail, its bare facial skin shifting through delicate shades of blue, lilac, and black. It tolerates real forest degradation better than most of its relatives, though its highest densities are still found in intact gallery forest such as the Berenty reserve.

That tolerance has not spared it from people. The giant coua is regularly hunted for meat using slingshots, snares, and traps, a direct human pressure layered on top of habitat loss, and a reminder that even the most adaptable member of a resilient family is not automatically a safe one.