Description wikipedia

Apolinar's wren (Cistothorus apolinari) is a passerine bird in the family Troglodytidae. It is endemic to Colombia. == Taxonomy and systematics == Apolinar's wren has two subspecies, the nominate Cistothorus apolinari apolinari and C. a. hernandezi. The latter was described in 2002 and has been suggested to be a separate species. Apolinar's wren, grass wren (C. platensis), and Mérida wren (C. meridae) form a superspecies. The common and scientific names of Apolinar's wren commemorate the Colombian monk Brother Apolinar Maria (1877–1949) who was also an ornithologist. Its Spanish common name is cucarachero de pantano (literally, swamp cockroach hunter). == Description == Apolinar's wren is 12 cm (4.7 in) long. A male C. a. hernandezi weighed 17.7 g (0.62 oz). Nominate adults have a chestnut crown, blackish brown shoulders and upper back with whitish buff streaks, and bright reddish brown lower back and rump. Their tails are reddish with blackish brown barring. They have a faint supercilium that is a bit lighter than the rest of the gray-brown face. Their underparts are buff-brown that is lighter on the throat and more reddish on the lower flanks. The juvenile's head is dark gray-brown with no supercilium, a buff nape, and less streaking on the back than the adult. C. a. hernandezi is much more whitish on its underparts than the nominate, rather than buffy. It wings are longer, its tail shorter, and its bill both heavier and longer.