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  1. Barn swallow - Wikipedia

  2. Barn Swallow Identification - All About Birds

  3. Barn Swallow Overview, All About Birds, Cornell Lab of …

  4. Barn Swallow Habits, Nesting, Feeding, Breeding - Wild-Bird-Watching.com

  5. Barn Swallow | Audubon Field Guide

  6. Barn Swallow - eBird

  7. Barn Swallow - ID, Facts, Diet, Habit & More - Birdzilla

  8. 10 Fascinating Barn Swallow Facts - Birds and Blooms

  9. Barn Swallow Life History - All About Birds

  10. Barn Swallow Birds: Essential Guide & Info - Swallow Conservation