Annual Barn Swallow flock forming again

As they do every fall, the Barn Swallows (possibly a significant portion of the west coast population) are gathering again to roost in the corn fields south of Dayton in Yamhill Co., Oregon. This snapshot is taken from a short video recorded on August 30. You can watch the video here:

http://www.youtube.com/watch?v=e1-s1sFrook

If you can play it as HD level 1080p and full screen, you will get a better view. But this video does not really do justice to the spectacular show that is playing out there in the low-lying fields along the Willamette River.