Grey-headed Kite

Identification

The Grey-headed Kite is a medium-sized raptor measuring 46–53 cm in length and weighing 410–605 grams. Adults are strikingly patterned with a grey head, black upperparts, white underparts, and a distinctive black tail bearing two or three white bars. The bill is blue and the legs are grey. In flight, the species employs a characteristic deliberate flap-flap-glide pattern that aids identification.

Immature birds are considerably more challenging to identify, as they exhibit three distinct colour morphs that closely mimic other hawk-eagle species. The light phase resembles the adult but features a white head and neck with a black crown and eyestripe, black bill, and yellow legs—closely resembling a Black-and-white hawk-eagle. The rufous phase displays a reddish neck with white throat, black malar stripes, and a distinctive long crest, mimicking an adult Ornate hawk-eagle. The dark phase shows blackish head and neck with dark-streaked buff underparts, resembling a Black hawk-eagle. This remarkable sophistication in juvenile mimicry has only been described a few times in ornithological literature.

Range & Habitat

The Grey-headed Kite is found throughout a broad range extending from eastern Mexico and Trinidad south through Central America and South America to Peru, Bolivia, Brazil, and northern Argentina. The species inhabits open woodlands and swamp forests, where it can exploit the mixture of perching opportunities and hunting grounds these ecosystems provide.

Behaviour & Diet

This raptor is a specialized hunter with a diverse diet centred primarily on reptiles. It feeds extensively on arboreal geckos, other lizards, and snakes, but supplements its diet with frogs, molluscs, and large insects including larvae and combs of hornets, wasps, and bees. Opportunistically, it will also take eggs, young birds, and injured birds when encountered. The Grey-headed Kite typically hunts by perching openly at height, from which it swoops down to snatch prey from below or from vegetation.

The species produces a distinctive mewling call described as "keow." During breeding season, pairs construct stick nests lined with grass, positioning them high in trees. Clutches typically consist of one or two white eggs that are purplish at one end and spotted with brown.

Best Time & Places to See It

The Grey-headed Kite can be encountered throughout its range in suitable open woodland and swamp forest habitats. Its preference for high, open perches makes it more visible than many forest raptors, increasing the likelihood of sightings during daylight hours when it is actively hunting.

Photography Tips

The species' habit of hunting from exposed high perches offers photographers excellent opportunities for clean shots without dense foliage obstruction. The striking contrast between the grey head and black and white plumage of adults makes for compelling imagery. When photographing immatures, note their remarkable resemblance to other hawk-eagle species—careful documentation of plumage details, crest position, and leg colouration will aid in confident identification of the colour morph being observed.