|Northern Rough-winged Swallow. Ramona, California. March 27, 2016. Greg Gillson.|
[Addendum, 4/20/2016: Bob Archer also recently posted about this display on his blog "Out and About Oregon Birds." It includes some neat photos of this display.]
|Northern Rough-winged Swallow. Escondido, California. April 3, 2016. Greg Gillson.|
Three years ago I wrote an identification article on brown swallows for my now discontinued Pacific NW Birder blog.