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What the Hawaiian Hawk sounds like

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.
When to see the Hawaiian Hawk
One bar for each month, and every month is filled: this bird is recorded here in all twelve. The wide bar is March, the month with the most records.
Where to see the Hawaiian Hawk
The map shades 1 country with regular records. Everything unshaded has no records. Countries are listed below the map.
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.
Easily confused with
Forest BuzzardButeo trizonatusThe forest buzzard is very similar to the abundant summer migrant steppe buzzard Buteo buteo vulpinus, the head, the back and upperwings are brown, marked out with rufous edges to the feathers the amount of which varies between individuals.
Galapagos HawkButeo galapagoensisThe Galapágos hawk is similar in size to the red-tailed hawk (Buteo jamaicensis) and the Swainson's hawk (Buteo swainsoni) of North America, but the size is variable across the islands as is recorded for many animals native to the Galapágos.
Side by side: Hawaiian Hawk vs Upland Buzzard · Black-breasted Buzzard vs Hawaiian Hawk · Forest Buzzard vs Hawaiian Hawk · Galapagos Hawk vs Hawaiian Hawk
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