Why do they call the Falcons dirty birds?

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Tags

1. #entire
2. #roaring
3. #popularized
4. #around
5. #guessed
6. #touchdown
7. #wings
8. #celebration
9. #would
10. #crowd
11. #anderson
12. #teammates
13. #called
14. #stick
15. #bounce
16. #wildly
17. #dance
18. #rallied
19. #dirty