On March 25th, Robert and I were working on a project in my office patio yard when birds beckoned to be filmed. I ran to get my camera and was able to capture these photos of Tree Swallows. We have four nest boxes on the far (East) end of the yard. Each year, two or three Tree Swallow pairs used them to raise a brood. This year, a pair became interested in the center box. Enjoy the photos.