![](http://www.alamy.com/thumbs/6/94EC93E1-32B1-4685-8491-63790CCECCE1/2JR68B2.jpg)
Barn swallows (Hirundo rustica) congregating in huge flock, sitting on power line / electrical wire before migrating
Size: 5373px × 3582px
Photo credit: © Clement Philippe / Alamy / Afripics
License: Licensed
Model Released: No
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