Southern Nightingale-Wren

The southern nightingale-wren (Microcerculus marginatus), also known as the scaly-breasted wren, is a species of bird in the family Troglodytidae. It is found in Bolivia, Brazil, Colombia, Costa Rica, Ecuador, Panama, Peru, and Venezuela. == Taxonomy and systematics == The southern nightingale-wren forms a species pair with the northern nightingale-wren (Microcerculus philomela) and was in the past considered conspecific with it. It is currently treated as a species in its own right by the International Ornithological Committee (IOC) and the Clements taxonomy, though under different English names. The southern nightingale-wren has the six subspecies listed below. Subspecies M. m. luscinia is treated by some taxonomists as a separate species. The nominate subspecies M. m. marginatus is also sometimes considered a separate species or even two species divided by the Amazon River. The southern nightingale-wren's subspecies are: M. m. luscinia Salvin (1866) M. m. corrasus Bangs (1902) M. m. squamulatus Sclater & Salvin (1875) M. m. occidentalis Hellmayr (1906) M. m. taeniatus Salvin (1881) M. m. marginatus Sclater (1855) == Description == The southern nightingale-wren is 11 cm (4.3 in) long; males weigh 18.2 to 22 g (0.64 to 0.78 oz) and females 17 to 18 g (0.60 to 0.63 oz).…