This large and extremely long-tailed cuckoo is long and weighs. The adult has mainly chestnut upperparts and head, becoming paler on the throat. The lower breast is grey and the belly is blackish. The central tail feathers are rufous, but the outer are black with white tips. The bill is yellow and the iris is red. Immature birds have a grey bill and eyering, brown iris, and less white in the tail. It resembles the little cuckoo, but that species is smaller and has a darker throat. There are a number of subspecies with minor plumage variations. For example, P. c. mehleri, one of the South American subspecies, has mainly brown outer tail feathers. Additionally, the subspecies from Mexico, Central America, and northern and western South America have a yellow eye-ring, but this is red in the remaining part of South America. It makes explosive kip! and kip! weeuucalls, and the song is a whistled wheep wheep wheep wheep.
Habitat and behavior
The squirrel cuckoo is found in woodland canopy and edges, second growth, hedges and semi-open habitats from sea level to as high as, although it is uncommon above. This species’ English name derives from its habit of running along branches and leaping from branch to branch like a squirrel. It normally flies only short distances, mainly gliding with an occasional flap. It feeds on large insects such as cicadas, wasps and caterpillars, and occasionally spiders and small lizards, rarely taking fruit. Its static prey is typically taken off the foliage with a quick lunge, but wasps may be picked out of the air. Squirrel cuckoos are often observed to forage peacefully alongside small mammals such as common marmosets during the dry season for cocoa beans. In particular, they can be seen to attend army ant columns together, picking off prey flushed by the ants, and occasionally will join mixed-species feeding flocks. The nest is a cup of leaves on a twig foundation, hidden in dense vegetation high in a tree. The female lays two white eggs. The squirrel cuckoo is plentiful in most of its range and appears to be quite tolerant of human disturbance, as long as wooded land remains. Compared to many cuckoos in the world, it is relatively bold and conspicuous, although it most often encountered skulking about within vegetation. Owing to its wide range, it is considered a species of Least Concern by the IUCN.
