Sharp-tailed Streamcreeper

The sharp-tailed streamcreeper (Lochmias nematura) is a passerine bird of South America in the Furnariinae subfamily of the ovenbird family Furnariidae. Alternate names include streamside Lochmias, sharp-tailed creeper, and simply streamcreeper. It is found in Panama and every mainland South American country except Chile, French Guiana, and Suriname. == Taxonomy and systematics == The sharp-tailed streamcreeper is the only member of its genus and has these six subspecies: L. n. nelsoni Aldrich, 1945 L. n. chimantae Phelps, WH & Phelps, WH Jr, 1947 L. n. castanonotus Chubb, C, 1918 L. n. sororius Cabanis, 1873 L. n. obscuratus Sclater, PL & Salvin, 1873 L. n. nematura (Lichtenstein, MHC, 1823) Subspecies L. n. obscuratus might be a separate species, but this idea is complicated by L. n. sororius, whose characteristics are intermediate between obscuratus and the nominate subspecies L. n. nematura. == Description == The sharp-tailed streamcreeper is 13 to 14 cm (5.1 to 5.5 in) long and weighs 20 to 38 g (0.71 to 1.3 oz). It is a rather dark furnariid with a long and slightly decurved bill. The sexes' plumages are alike. Adults of the nominate subspecies have a narrow ragged white supercilium, blackish lores, dull brownish ear coverts…