Andean Swallow Orochelidon andecola

A medium-sized swallow found only in the high Andes, the Andean Swallow is dark, glossy blue above with a grayish brown rump and underparts.  It often forages over water, or around groups of grazing mammals.  Although the Andean Swallow is locally common, and sometimes nests under the eaves of buildings, it remains a very poorly known species.