socorro mockingbird Mimus graysoni

Only on Socorro Island, where in danger of extinction due to feral cats and overgrazing. Largely restricted to forest and edge on higher slopes of the island. Note the rather plain gray-brown head and upperparts, narrow whitish wingbars, whitish underparts with faint dusky streaks on the flanks, and narrow paler tail tips. Lacks the big white wing and tail flashes of Northern Mockingbird, which also occurs on the island.