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There was hunting, competition for ranching, and diseases the big horn sheep were endangered. -
Mountain Bluebirds populations declined 26% because so many people were breeding them people became concerned about them. -
In the Las Vegas zoo there are over 150 species. here are some of them: alligator, lion, coyote, Eagle, chimp, tiger and more. -
A program of reintroductions, natural parks, stoped hunting the sheep comeback.