Swallows gathering mud by the river so they can build their mud nests
By Gary Bogue
Tuesday, June 1st, 2010 at 7:34 am in Swallows.
Photo by Dave Harper, Oakley, CA
Swallows scoop up mud by the mouthful along the riverbanks so they can use it to build their mud nests.
Thanks to Dave Harper, Oakley, Calif., for this excellent photo. /Gary
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