About Teretistris fornsi Gundlach, 1858
The Oriente warbler (Teretistris fornsi) is approximately 13 cm (5.1 in) long, and weighs between 7.4 and 13 g (0.26 to 0.46 oz). The nominate subspecies has a gray crown, nape, and upperparts. Its face, throat, and most of its underparts are yellow, while its belly and undertail coverts are white, and its flanks have a dull brownish wash. The subspecies T. f. turquinensis is slightly larger than the nominate subspecies; its crown and upperparts are sooty gray, and the wash on its flanks is gray instead of brownish. The nominate subspecies of Oriente warbler occurs in the mountains and coast of eastern Cuba, and in the Sabana-Camagüey Archipelago off the north coast of Cuba's main island. T. f. turquinensis is found in the Sierra Maestra along Cuba's southeastern coast. This bird occupies all available forest types that have a relatively undisturbed understory, and also lives in scrubby thickets in drier areas. Its elevational range extends from sea level to almost 2,000 m (6,600 ft). It is typically found in scrubby semi-arid woodlands near the coast, and in more humid forest at higher elevations.