tachycineta (from tachys, swift, and kinetos, to move) thalassina (sea-green)
Monday, April 2, 1984 — 10:00 am
Coronado National Forest, Arizona — Sabino Canyon Recreation Area
I had a hard time seeing all the field marks on these Violet-green Swallows because I was at the bottom of the canyon, and they were flying up near the rim. But I had time. I watched them circling over the canyon until I was satisfied.