San Juan Capistrano was the name of a mission built on the Pacific Coast by Father Junípero Serra in 1777. Even after the buildings collapsed in an earthquake 35 years later, thousands of swallows continued to nest in the ruins of the church. Local people noticed that the swallows tended to fly south on October 23, the death anniversary of St. John of Capistrano, and returned on March 19, St. Joseph’s Day. A Swallow Festival is held each year at the mission in San Juan Capistrano near Los Angeles, California, around the time of the birds’ return. Discuss
Source: The Free Dictionary