Rusty-flanked Treecreeper

A medium-sized shearwater with uniformly dark brown plumage and no contrasting markings. Flies more steadily than most shearwaters and usually flies low over the water. Large numbers nest on most of the Northwestern Hawaiian Islands. A few pairs nest on Moku Manu Islet off the eastern coast of Oahu. Often seen from boats in the Northwestern Hawaiian Islands, but rarely on the main islands and rarely from shore. The voice, usually heard only at breeding colonies, is a low moan.

A fairly small bird of grasslands and swamps from the lowlands to mid-mountains. Large for a munia. Black head and underparts, rufous back and sides blending to yellow tail. Note the large silver-blue bill. Juvenile all brown but still with a large bill. Distinguished from other co-occuring munia species by its larger size and much thicker bill. Call, sharp, metallic “tink” notes.

Fairly common but elusive; heard far more often than seen. Favors native temperate forest and adjacent shrubbery, especially bamboo. Feeds on the ground by scratching with its big feet in leaf litter, and runs very quickly and stealthily. Agitated birds can call loudly from middle level perches, cocking their tail. Nests in burrows, but can nest high up in tree hollows. Plumage distinctive, with pale eyering, dark slaty throat and breast, and rusty belly. No range overlap with Chestnut-throated Huet-huet.