Cliff swallows are cousins of barn swallows and purple martins. They have long, narrow wings, forked tails, and weak, tiny feet. Incredibly graceful in flight, they feed on the wing, catching insects in their wide mouths; they can effortlessly make abrupt changes in direction or speed as they feed. There is a large population that arrives in San Juan Capistrano, California (about an hour south of Los Angeles) in March and departs in October. They winter in Goya, Corrientes, Argentina. [courtesy National Day of Calendar] Continue reading “Swirling Mass Departs”