About the White-chinned Thistletail
The white-chinned thistletail, or colicardo barbiblanco in Ecuador, (Asthenes fuliginosa) is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Colombia, Ecuador, Peru, and Venezuela.
The white-chinned thistletail has four subspecies: Asthenes fuliginosa fuliginosa (Lafresnaye, 1843) Asthenes fuliginosa fumigata (Borrero, 1960) Asthenes fuliginosa peruviana (Cory, 1916) Asthenes fuliginosa plengei (O'Neill & Parker, 1976)
What are now several other individual species of thistletail were previously also treated as subspecies of the white-chinned thistletail. All of them were in genus Schizoeaca but genetic data showed that the genus is embedded within Asthenes. In addition, the mouse-colored thistletail (A. griseomurina) possibly should be treated as a fifth subspecies of the white-chinned.
The white-chinned thistletail is 18 to 20 cm (7.1 to 7.9 in) long and weighs 14 to 20 g (0.49 to 0.71 oz). It is the largest thistletail. The sexes have the same plumage. Adults of the nominate subspecies A. f. fuliginosa have a faint grayish-tawny supercilium and a whitish eyering on an otherwise... Wikipedia →