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Photo Credits
- 1. (c) Jason M Crockwell, some rights reserved (CC BY-NC-ND), uploaded by Jason M Crockwell
- 2. (c) Derek Hennen, some rights reserved (CC BY), uploaded by Derek Hennen
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- 4. (c) Katja Schulz, some rights reserved (CC BY)
- 5. (c) Erik Erbes, some rights reserved (CC BY), uploaded by Erik Erbes
- 6. (c) Ryosuke Kuwahara, some rights reserved (CC BY-NC), uploaded by Ryosuke Kuwahara
- 7. (c) Marshal Hedin, some rights reserved (CC BY)
- 8. (c) Alex Bairstow, some rights reserved (CC BY-NC), uploaded by Alex Bairstow
- 9. (c) Tony Iwane, some rights reserved (CC BY-NC), uploaded by Tony Iwane
- 10. (c) davidenrique, some rights reserved (CC BY-NC-SA), uploaded by davidenrique
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- 12. (c) Morgan Jackson, some rights reserved (CC BY), uploaded by Morgan Jackson
- 13. (c) Judy Gallagher, some rights reserved (CC BY-SA), uploaded by Judy Gallagher
- 14. (c) John Abbott, some rights reserved (CC BY-NC-ND), uploaded by John Abbott
- 15. (c) Valter Jacinto, some rights reserved (CC BY-NC-SA)
- 16. (c) Seabrooke Leckie, some rights reserved (CC BY-NC-ND)
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- 18. (c) Saryu Mae, some rights reserved (CC BY), uploaded by Saryu Mae
- 19. (c) Meghan Cassidy, some rights reserved (CC BY-SA), uploaded by Meghan Cassidy
- 20. (c) Patrick Coin, some rights reserved (CC BY-NC)
- 21. (c) Robby Deans, some rights reserved (CC BY-NC), uploaded by Robby Deans
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- 23. (c) cotinis, some rights reserved (CC BY-NC-SA)
- 24. (c) Denis Doucet, some rights reserved (CC BY-NC), uploaded by Denis Doucet
- 25. (c) MSOne, some rights reserved (CC BY-NC-ND), uploaded by MSOne
- 26. (c) Katja Schulz, some rights reserved (CC BY), uploaded by Katja Schulz
- 27. (c) mrdace, some rights reserved (CC BY), uploaded by mrdace
- 28. (c) James Bailey, some rights reserved (CC BY-NC), uploaded by James Bailey
- 29. (c) Russell Pfau, some rights reserved (CC BY-NC), uploaded by Russell Pfau
- 30. (c) Ferran Turmo Gort, some rights reserved (CC BY-NC-SA)
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- 32. (c) Benny Mazur, some rights reserved (CC BY)
- 33. (c) crgillette, some rights reserved (CC BY-NC), uploaded by crgillette
- 34. (c) Ken Schneider, some rights reserved (CC BY-NC), uploaded by Ken Schneider
- 35. (c) Tom Murray, some rights reserved (CC BY-NC), uploaded by Tom Murray
- 36. (c) Margarita Lankford, some rights reserved (CC BY-NC), uploaded by Margarita Lankford
- 37. (c) Lisa Brown, some rights reserved (CC BY-NC)
- 38. (c) Ludivine Lamare, some rights reserved (CC BY), uploaded by Ludivine Lamare
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- 47. (c) Norm Townsend, some rights reserved (CC BY-NC-ND)
- 48. (c) Rick McNelly, some rights reserved (CC BY-NC), uploaded by Rick McNelly
- 49. (c) Jakob Fahr, some rights reserved (CC BY-NC), uploaded by Jakob Fahr
- 50. (c) Martha O'Kennon, some rights reserved (CC BY-NC), uploaded by Martha O'Kennon
- 51. (c) Susan J. Hewitt, some rights reserved (CC BY-NC), uploaded by Susan J. Hewitt
- 52. (c) Matt Bertone, all rights reserved, uploaded by Matt Bertone
- 53. (c) Ken Potter, some rights reserved (CC BY-NC), uploaded by Ken Potter
- 54. (c) Zachary Dankowicz, some rights reserved (CC BY-NC), uploaded by Zachary Dankowicz
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- 57. (c) Chloe and Trevor Van Loon, some rights reserved (CC BY), uploaded by Chloe and Trevor Van Loon
- 58. (c) Gilles San Martin, some rights reserved (CC BY-SA), uploaded by Gilles San Martin
- 59. (c) skitterbug, some rights reserved (CC BY), uploaded by skitterbug
- 60. (c) Alexis, some rights reserved (CC BY), uploaded by Alexis
- 61. (c) Joshua Doby, some rights reserved (CC BY-NC), uploaded by Joshua Doby
- 62. (c) Pierre Bornand, some rights reserved (CC BY-NC)
- 63. (c) Julian F, some rights reserved (CC BY-NC), uploaded by Julian F
- 64. (c) Michael Tessler, some rights reserved (CC BY-NC), uploaded by Michael Tessler
- 65. (c) ron100, some rights reserved (CC BY-NC)
- 66. (c) amlambert11, some rights reserved (CC BY-NC), uploaded by amlambert11
- 67. (c) Timothy Frey, some rights reserved (CC BY-NC), uploaded by Timothy Frey
- 68. (c) Jonathan (JC) Carpenter, some rights reserved (CC BY-NC), uploaded by Jonathan (JC) Carpenter
- 69. (c) John Himmelman, some rights reserved (CC BY-NC-ND), uploaded by John Himmelman
- 70. (c) Paul B., some rights reserved (CC BY-NC-ND), uploaded by Paul B.
- 71. (c) Nick Block, some rights reserved (CC BY), uploaded by Nick Block
- 72. (c) Wil Hershberger, some rights reserved (CC BY-NC-ND), uploaded by Wil Hershberger
- 73. (c) Jen Cross, some rights reserved (CC BY-NC), uploaded by Jen Cross
- 74. (c) Doren Burrell, some rights reserved (CC BY-NC), uploaded by Doren Burrell
- 75. (c) Eric M Powell, some rights reserved (CC BY-NC), uploaded by Eric M Powell
- 76. (c) Stott Noble, some rights reserved (CC BY-NC), uploaded by Stott Noble
