Several Chimney Swifts inside a chimney in Perryville, Missouri, USA.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/17004938@N00">Greg Schechter</a> from San Francisco, USA
CC BY 2.0
<p><a rel="nofollow" class="external text" href="https://www.flickr.com/photos/gregthebusker/5058612509/">Chimney Swifts</a>
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