Why Do Cliff Swallows Flutter Their Wings When Gathering Mud?

by Larry on August 17, 2011

For the answer to that question, check out my latest West Coast Beat Writer post over at 10000 Birds! Here’s what the behavior looks like.

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missing moments August 17, 2011 at 8:04 pm

Found your article on 10000 birds interesting! Such hard work for this guys!

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