BLUE-AND-WHITE SWALLOW Pygochelidon cyanoleuca
Though it is indeed blue and white, it is not the only blue and white swallow that occurs in Paraguay so a little care is required to identifiy this species, especially when seen from below. It is uncommon over most of the country and appears to be migrant, though it is present year-round in the extreme south and breeds on buildings in the city of Encarnación. Numbers swell in the south during the migration period when large flocks gather on power lines along the banks of the Rio Paraná. The black vent of this species visible in (FPAVE3140PH) is diagnostic.
Click on the images to enlarge them.
FIGURE 1 - (FPAVE3140PH) Ventral view, Encarnación, Departamento Itapúa (Paul Smith October 2006).
FIGURE 2 - (FPAVE3141PH) Adult, Encarnación, Departamento Itapúa (Paul Smith September 2006).
FIGURE 3 - (FPAVE3142PH) Upperwing of same individual as (FPAVE3141PH) (Paul Smith September 2006).
FIGURE 4 - (FPAVE3484PH) Pair, Hernandarias, Departamento Alto Paraná (Sergio Rios July 2012).
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Pygochelidon cyanoleuca
1 (FPAVE3143RE) Song  recorded Encarnación, Departamento Itapúa (Paul Smith August 2007)..
Click the link to hear the call. Longer versions of this call can be downloaded from the Paraguay page of our partner website Xeno-Canto - the largest collection of freely downloadable Neotropical bird calls available online.
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