Flying in Formation ~ Cliff Swallows flying in tandem, away from the mud-gathering area, getting mud for nest building.
Cliff Swallows ~ It was fun watching the swallows gathering mud for their nests, zipping around, back and forth.
Cliff Swallows Flying ~ I've never been able to photograph swallows in flight, as they fly so fast, and dart and swoop around so much. At the "mud hole" they were flying in and out, and I had some change to capture them in flight.