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  1. Millions Of Monarch Butterflies Cover Every Inch Of A Tree In Sierra Chincua, Mexico
  2. A Salmon-Crested Cockatoo At The Sedgwick County Zoo
  3. A great egret, Ardea alba
  4. Smooth fronted caiman at the Saint Augustine Alligator Farm Zoological Park
  5. A Salmon-Crested Cockatoo At The Sedgwick County Zoo
  6. A military macaw at the Denver Zoo, Denver, Colorado
  7. A Two-Month-Old Ocelot Cub At The Toucan Rescue Ranch In Costa Rica
  8. A federally threatened koala climbs on top of its mother, who has conjunctivitis
  9. A Hawaiian orange hibiscus, Hibiscus kokio saintjohnianus
  10. Ghost ants at the Urban Entomology Lab at the University of Florida
  11. A wood duck, at the Lincoln Children's Zoo
  12. Lower Klamath National Wildlife Refuge, Klamath Basin Refuge Complex, Californi A
  13. An endangered giant panda, Ailuropoda melanoleuca, at Zoo Atlanta
  14. Between The Continental Divide And Lemhi Valley, Idaho
  15. A male and female white winged duck, Asarcornis scutulata, at Sylvan Heights Bird Park
  16. Common wanderer at Angkor Center for Conservation of Biodiversity
  17. Endangered peninsula pronghorn antelopes at the Los Angeles Zoo
  18. A sulpher-crested cockatoo, at the Minnesota Zoo
  19. A nautilus, Nautilus pompilius, at the Monterey Bay Aquarium
  20. A herd of bison roam on a ranch
  21. An endangered Malayan tiger, Panthera tigris jacksoni
  22. Speckled Caimans (Caiman Crocodilus) Swimming In Rushing River Water, Pantanal, Brazil
  23. Barred owl, Strix varia, from Florida Wildlife Care
  24. Sioux Falls, South Dakota
  25. A vulnerable lesser prairie chicken, Tympanuchus pallidicinctus
  26. A western diamondback rattlesnake migrates radially from its den
  27. Small Indian Mongoose, Herpestes Javanicus, At The Assam State Zoo
  28. A federally threatened grizzly bear, Ursus arctos horribilis
  29. An endangered Malayan tiger
  30. A military macaw at the Denver Zoo, Denver, Colorado
  31. Salmon, Idaho
  32. A Zerafshan pheasant, Phasianus colchicus zerafschanicus, at the Plzen Zoo
  33. A Rio Grande cutthroat trout at Seven Springs Fish Hatchery
  34. An aye aye, Daubentonia madagascariensis, at Duke Lemur Center
  35. A critically-endangered Sumatran tiger at Zoo Atlanta
  36. Basket Star, Gorgonocephalus Eucnemis, At The Alaska Sealife Center
  37. A blossom headed parakeet, Psittacula roseata roseata, at Loro Parque Fundacion
  38. A federally threatened grizzly bear, Ursus arctos horribilis
  39. An albino Nelson's milksnake, Lampropeltis triangulum nelsoni
  40. Carolina wren, Thryothorus ludovicianus, from Florida Wildlife Care
  41. Atacama Desert, Chile
  42. A federally threatened koala at a wildlife sanctuary
  43. San Francisco Garter Snake, Thamnophis Sirtalis Tetrataenia, At The Exmoor Zoo
  44. Mei Lun And Mei Huan, Twin Giant Panda Cubs, Ailuropoda Melanoleuca, At Zoo Atlanta
  45. An Endangered Male, White Bengal Tiger At The Alabama Gulf Coast Zoo
  46. A federally endangered clouded leopard, Neofelis nebulosa
  47. A male Malay peacock pheasant, Polyplectron malacense, at Pheasant Heaven
  48. A partially albino red-tailed hawk, at the Minnesota Zoo