This medium-sized raptor is immediately distinguished by its slender silhouette and unique anatomical adaptations. It measures between 15 and 20 inches (38 to 51 centimeters) in length, with a body weight ranging from 250 to 350 grams. Its plumage is predominantly a uniform slate-gray or bluish-gray, which may feature subtle whitish barring on the underparts in certain subspecies. It boasts a remarkably long, dark tail marked by two prominent broad white bands and a white tip. However, its most striking physical feature is its extremely long, orange-red legs, which possess a highly flexible intertarsal joint capable of bending sideways up to 70 degrees, an evolutionary trait designed for probing tree cavities. Its iris is a vibrant deep red in adults, contrasting sharply with its small head and hooked black bill.
Geographical distribution: This species is widely distributed across the Neotropical region, ranging from northern Mexico (including states like Sonora and Tamaulipas) through Central America (including countries such as Guatemala, Honduras, and Panama) down into South America. Within the South American subcontinent, it is found east of the Andes, spanning territories in Colombia, Venezuela, the Guianas, Ecuador, Peru, Bolivia, Paraguay, a large portion of Brazil, and reaching its southernmost limits in northern and central Argentina and Uruguay.
Habitat: It primarily inhabits lowland, humid environments, displaying a clear preference for gallery forests, mangroves, swamp forests, flooded woodlands, tropical forest edges, and savannas with scattered trees. It generally avoids dense, continuous terra firme rainforests, opting instead for the ecotone between aquatic systems and wooded areas, as well as swampy zones and disturbed secondary forests rich in epiphytes and natural cavities.
Feeding: Its foraging strategy is highly specialized and relies on consuming a diverse array of small vertebrates and invertebrates. Its diet includes lizards, tree frogs, small rodents, bats, bird nestlings, and large insects. It actively uses its long, slender legs to extract hidden prey from inside bromeliads, wasp nests, bark crevices, tree hollows, and tangled masses of dead leaves, a behavioral feat made possible by the extraordinary flexibility of its double-jointed ankles.
Behavior: It is usually observed singly or in breeding pairs. It is a highly agile bird that easily goes unnoticed due to its quiet, deliberate movements within the middle and lower forest canopy. When hunting, it performs a unique climbing behavior, clinging to trunks and branches using its claws while continuously flapping its wings to maintain balance as it inspects deep crevices. Its flight is buoyant and slow, alternating between floppy wingbeats and brief glides. Its vocalization is a plaintive, drawn-out whistle emitted mostly during the breeding season.
Nesting: Breeding periods vary geographically depending on regional rainfall patterns. It constructs a cup-shaped nest made of thin twigs, rootlets, and green leaves, positioned at substantial heights ranging from 30 to 80 feet (10 to 25 meters) above the ground. The nest is typically well-concealed within the crowns of palm trees, clusters of epiphytes, or parasitic plants like mistletoe. The female lays 1 or 2 grayish-white eggs speckled with reddish-brown spots, which she incubates for approximately 35 to 39 days, while the male assumes the role of primary food provider during this period.
Conservation status: It is currently listed as Least Concern (LC) on the IUCN Red List of Threatened Species. Although it maintains an extremely vast geographic range, local populations are increasingly threatened by wetland degradation, the clearing of riparian forests, and habitat fragmentation, which significantly deplete the availability of optimal nesting and foraging microhabitats.
Compilation and publication: EcoRegistros – 10/08/2026