Pearl kite

The pearl kite (Gampsonyx swainsonii) is a very small raptor that lives in open savanna areas near deciduous woodlands in Central and South America. It is special because it is the only bird in its genus, meaning no other birds are closely related to it. This unique bird was named to honor the English naturalist William Swainson, who contributed to the study of natural history. Pearl kites are fascinating birds that help scientists understand more about biodiversity in their habitats.

Taxonomy and systematics

The type specimen of the pearl kite was collected from Brazil by the English naturalist William Swainson. It was described by Nicholas Aylward Vigors in 1825, who noted its similarity to both hawks and falcons. Over time, the pearl kite was classified with falcons, and later studies showed its relation to Elanus based on its physical traits and molting pattern.

Distribution and habitat

This tiny kite lives in open savanna areas near deciduous woodlands in Central and South America. It breeds from Panama, Colombia, and Venezuela down to Bolivia and northern Argentina. There is also a stable group in Nicaragua. The pearl kite is expanding its range and was confirmed to breed on Trinidad in 1970. It was first seen in Costa Rica in the mid-1990s and is now fairly common along the Pacific slope, up to 1000 meters.

Description

The pearl kite is a very small bird of prey, measuring about 20 to 23 centimeters long and weighing between 80 and 95 grams. It is the smallest raptor in the Americas and one of the two smallest accipitrids in the world, alongside the little sparrowhawk. Adults have a black crown, back, wings, and tail, with a rufous-edged white collar, yellow forehead and cheeks, and mainly white underparts. Their legs are yellow. Young birds look similar but have white and chestnut tips on their back and wing feathers, along with a buff-colored collar and some buff coloring on their underparts. When flying, the pearl kite appears mainly black on top and white underneath. The northern form G. s. leonae has rufous-colored flanks, distinguishing it from the main species G. s. swainsonii. Another neotropical bird, the tiny hawk, is slightly heavier than the pearl kite.

Behaviour

The pearl kite builds a deep cup nest high in trees. The female lays 2 to 4 eggs, which she incubates for about 34 to 35 days. The baby birds stay in the nest for another five weeks before they can fly.

These small birds of prey mainly eat lizards, such as Anolis and geckos, but they also hunt small birds, frogs, and insects. They often sit on a high branch and swoop down to catch their food. Their call sounds like a musical pip-pip-pip-pip or kitty-kitty-kitty.