this is the bird migration that we see here in my area every October and march. Quite a sight.
http://www.infoplease.com/spot/swallows1.html
The Swallows of San Juan Capistrano
[SIZE=-1]Back from winter vacation in Argentina[/SIZE]
They're on their way.
The famous cliff swallows of
San Juan Capistrano, that leave town every year in a swirling mass near the Day of San Juan (October 23), are returning from their winter vacation spot 6,000 miles south in Goya, Corrientes,
Argentina.
They land at the
mission in San Juan, California, on or around St. Joseph's Day, March 19, to the ringing bells of the old church and a crowd of visitors from all over the world who are in town awaiting their arrival and celebrating with a huge fiesta as well as a parade.