Endemic and Endangered
As of January 2008, the state of Hawai‘i has 344 plants and animals on the USFWS Threatened and Endangered Species list, 32 are native birds. This is twice as many as any other state except for California (309).
Six native species have been observed in the park, half of these are endemic (found only in Hawai‘i), the ‘Io, Pueo and Ae‘o and two of these are endangered.
The ‘Io (Hawaiian Hawk) is endangered and it is the only resident raptor found in Hawai‘i. You are most likely to see it soaring against the blue sky, with its keen eyes searching the earth far beneath its wings, for another meal.
The Pueo (Short-eared Owl) is usually silent except for a series of low hoots heard during courtship and an occasional muffled bark. It is crepuscular in its hunt. The Pueo was revered as an aumakua (guardian spirit) by the ancient Hawaiians
The Ae‘o (Hawaiian Stilt), a tall slender wading bird is also endangered. Sightings of Ae'o at Pu'uhōnua are extremely rare. The distinguished black and white body of the Ae’o is supported by pink, long, thin legs. The Ae’o is a ground nesting bird so it is highly vulnerable to predation by mongoose, cats, dogs and even human disturbance.