Bird Guide

Hawaiian Hawk

Buteo solitarius

Near ThreatenedEndemicVertebratesForestPlatform nestLarge · 501 g

About the Hawaiian Hawk

The Hawaiian hawk or ʻio is a raptor in the genus Buteo endemic to Hawaiʻi, currently restricted to the Big Island. The ʻio is one of two extant birds of prey that are native to Hawaiʻi, the other being the pueo and fossil evidence indicates that it inhabited the island of Hawaiʻi, Molokaʻi, Oʻahu, Maui and Kauaʻi at one time. Today, it is known to breed only on the Big Island, in stands of native ʻōhiʻa lehua trees. The species was protected as an endangered species in the United States, but was delisted in 2020. However, the IUCN classifies the species as Near Threatened. NatureServe considers the species Vulnerable.

Text adapted from Wikipedia, licensed CC BY-SA 4.0.

ID tip

The Hawaiian hawk measures approximately 40 to 46 centimetres (16 to 18 in) in length. The female, which weighs 605 g (21.3 oz) on average, is larger than the male, which averages 441 g (15.6 oz). Two color phases exist: a dark phase (dark brown head, breast, and underwings), and a light color phase (dark head, light breast and light underwings). Feet and legs are yellowish in adults and greenish in juveniles. During breeding season one of the pair, possibly the female, has a distinctive yellow forecap area just above the upper mandible.

Text from Wikipedia, licensed CC BY-SA 4.0.

What the Hawaiian Hawk sounds like

Recording: Niels Krabbe · CC BY-SA 4.0 · via xeno-canto

Where the Hawaiian Hawk lives

Regular range

When to see the Hawaiian Hawk

Peak activity in March · a resident species across most of its range

Easily confused with

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