Narrow-billed Woodcreeper

The narrow-billed woodcreeper (Lepidocolaptes angustirostris) is a species of bird in the subfamily Dendrocolaptinae of the ovenbird family Furnariidae. It is found in Argentina, Bolivia, Brazil, Paraguay, Suriname, and Uruguay. == Taxonomy and systematics == The narrow-billed woodcreeper has these eight subspecies: L. a. griseiceps Mees, 1974 L. a. coronatus (Lesson, RP, 1830) L. a. bahiae (Hellmayr, 1903) L. a. bivittatus (Lichtenstein, MHC, 1822) L. a. hellmayri Naumburg, 1925 L. a. certhiolus (Todd, 1913) L. a. angustirostris (Vieillot, 1818) L. a. praedatus (Cherrie, 1916) Several other subspecies have also been proposed as splits from the existing ones. All of the subspecies that adjoin each other intergrade, to the point where some authors have advocated treating the species as monotypic. == Description == The narrow-billed woodcreeper is 18 to 22 cm (7.1 to 8.7 in) long; males weigh 23 to 37.5 g (0.81 to 1.3 oz) and females 21.5 to 33.5 g (0.76 to 1.2 oz). It is a slim, medium-sized woodcreeper with a long, slim, moderately decurved bill. The sexes have the same plumage. Adults of the nominate subspecies L. a. angustirostris have pale lores, a buffy white supercilium that widens to the rear and becomes a line of broken…