URBAN BIRDS OF THE PARKS, GARDENS, AND SOURROUNDING AREAS OF LOJA CITY ECUADOR. BOOK WITH 44 COMMON SPECIES. ILLUSTRATED BY PABLO ANDRADE. WORK SUPPORTED BY JAN HINLOOPEN
Blue and white Swallow, pygochelidon cyanoleuca
Blue and White Swallow, Pygochelidon cyanoleuca.- Common and widespread in open and semiopen areas in highlands (but not in paramo); a few occur down into lowlands, in east only as an austral migrant (Apr - sept). The most frequently seen swallow in built - up and agricultural areas in highlands.
12 - 12, cm. Entirely glossy steel blue above and white below with obvious black crissum. Juvenile browner above, sometimes some dusky spotting on chest. Austral migrants have black on crissum restricted to its sides.
A familiar, tame, and conspicuous swallow, often seen perching on wires and fences. Nests, regularly in small colonies, in holes in banks and building.