Tumbes Swallow

The Tumbes swallow (Tachycineta stolzmanni) is a species of bird in the family Hirundinidae, the swallows and martins. It is found in Ecuador and Peru. == Taxonomy and systematics == The Tumbes swallow was first described as Hirundo leucopygia in 1880. However, that binomial already applied to a different species so in 1902, following the principle of priority, Philippi named it Hirundo Stolzmanni and is credited with its formal description. It later was moved to its present genus Tachycineta that had been erected in 1851. For much of the twentieth century it was treated as a subspecies of the mangrove swallow (Tachycineta albilinea) but by early in the twenty-first century it was widely accepted as a full species. The Tumbes swallow is monotypic. == Description == The Tumbes swallow is 11.5 to 12 cm (4.5 to 4.7 in) long and weighs about 11 g (0.39 oz). It is the smallest member of its genus. The sexes have the same plumage. Adults have a dark blue-brown to blue green head with a small white stripe from the base of the bill to above the eye and white cheeks and throat. Their upperparts, wings, and tail are dark blue-brown to blue green…