The Black-collared Hawk is a fairly large bird of prey in the family Accipitridae. It is monotypic within the genus Busarellus. Named for its black bib, the Black-collared Hawk most easily is identified by its rufous plumage and very short tail.
It is found in Central and South America, all the way from central Mexico south to Uruguay, and is always close to water bodies. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical swamps, and swamps.
Typically Black-collared Hawks perch above shallow pools or marshes and drop onto prey, which most often are fish. It also eats water bugs and occasionally lizards, snails, frogs and rodents.
Interestingly, the Black-collared Hawk has the basal phalanges of the inner toe fused, which may be an adaptation to prevent the toe from bending back when catching prey. This feature is shared with Ictinia and with the group of true milvine kites and sea eagles.