European settlers almost wiped out North America's native wild turkey. But conservation efforts have proved successful. There are now nearly 7 million birds found across 49 states. Larry Price, National Wild Turkey Federation/NWTF.org hide caption

itoggle caption Larry Price, National Wild Turkey Federation/NWTF.org

Dara Arista, 8, holds a photo of Sheila in front of the tiger's cage at the zoo in Jambi, Indonesia. Poachers had slaughtered Sheila during the night. Steve Winter/National Geographic hide caption

itoggle caption Steve Winter/National Geographic

Mixed grasses growing in a parcel of land enrolled in the Conservation Reserve Program is seen near Tribune, Kan. Millions of acres of CRP nationwide will be returned to farmland.

Charlie Riedel/AP hide caption

itoggle caption Charlie Riedel/AP