Scientific Name: Petrochelidon pyrrhonota
Population Estimate: 90M
Range: Winters in much of South America. Summers in most of Mexico, the US, and Canada into Alaska.
Field Notes: Builds gourd-shaped nests on buildings, cliffs, and under bridges. Blue back, rufous chin, white belly and a white forehead stripe. Square tail used for propping as above. Lacks the forked tail of the Barn Swallow. The Tree Swallow does not have any rufous coloring.
Personal Notes: Such a fun group of birds to watch building and interacting at their nests.