Dusky Spinetail

About the Dusky Spinetail

The dusky spinetail (Synallaxis moesta) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Colombia, Ecuador, and Peru. The dusky spinetail has three subspecies, the nominate S. m. moesta (Sclater, PL, 1856), S. m. brunneicaudalis (Sclater, PL, 1858), and S. m. obscura (Chapman, 1914).

In the early twentieth century, subspecies S. m. brunneicaudalis was treated as a separate species but since then has had its present placement. Genetic data published in 2011 supported that the dusky spinetail, Cabanis's spinetail (S. cabanisi), and McConnell's spinetail (S. macconnelli) form a monophyletic group. However, data published in 2013 has evidence that the dusky spinetail might be more closely related to the rufous-capped spinetail (S. ruficapilla).

The dusky spinetail is 15.5 to 17 cm (6.1 to 6.7 in) long and weighs 20 to 25 g (0.71 to 0.88 oz). It is one of the darkest of the Synallaxis spinetails. The sexes have the same plumage. Adults of the nominate subspecies have a dark sooty-gray face. Their forcrown is blackish gray, their hindcrown dark chestnut, their back dark sooty brownish, and... Wikipedia →