White-bellied Wren

The white-bellied wren (Uropsila leucogastra) is a species of bird in the family Troglodytidae. It is found in Belize, Guatemala, Honduras, and Mexico. == Taxonomy and systematics == The white-bellied wren is the only member of genus Uropsila, but its taxonomy at the subspecies level is uncertain. The International Ornithological Committee (IOC) names five subspecies, the nominate Uropsila leucogastra leucogastra, U. l. pacifica, U. l. centralis, U. l. restricta, and U. l. brachyura. The Handbook of Birds of the World adds U. l. musica. The Cornell Lab of Ornithology's Birds of the World mentions musica in its text but does not list it; it does list two others in addition to the above five, U. l. grisescens and U. l. australis. Cornell qualifies their additions by noting that australis "may be separable" and that grisescens is "doubtfully valid" because it was based on soot-discolored specimens. == Description == The white-bellied wren is 9.5 to 10 cm (3.7 to 3.9 in) long. Males weigh 9.8 to 10.5 g (0.35 to 0.37 oz) and females 8 to 9.1 g (0.28 to 0.32 oz). The nominate subspecies has a medium brown crown, upperparts, and tail; the rump is slightly reddish and the tail…