Grey-barred Wren

The gray-barred wren (Campylorhynchus megalopterus) is a species of bird in the family Troglodytidae. It is endemic to Mexico. == Taxonomy and systematics == The gray-barred wren has two subspecies, the nominate Campylorhynchus megalopterus megalopterus and C. m. nelsoni. The latter has been suggested as a separate species but there are only small differences between the subspecies in size and plumage and no apparent differences in their voices. == Description == The gray-barred wren is 17 to 19.5 cm (6.7 to 7.7 in) long and weighs 32.8 to 33.5 g (1.16 to 1.18 oz). Both sexes of the nominate have a grayish crown with a black center, a black and white striped nape, and black shoulders and back barred with white. Their throat and chest are white with black spots and the flanks buff with blackish bars. C. m. nelsoni is the smaller of the subspecies and its underparts' spots and bars are grayish brown. The juvenile has a solid brown cap and is buff and brownish overall with no bars on the back and no spots on the chest. == Distribution and habitat == The ranges of the two subspecies of gray-barred wren do not meet. The nominate is…