By the early 20th century, commercial exploitation, unregulated hunting and poor land-use practices such as deforestation had severely depressed deer populations in much of their range.
Perhaps the main threat to the species is development and destruction of wetland habitats and unregulated hunting.
The original herds disappeared more than a century ago because of unregulated hunting and a loss of habitat from logging and farming.
By ending unregulated hunting and taking measures to protect remaining habitat, wood duck populations began to rebound in the 1920s.
Any time wolf numbers dropped too low, Mr. Cleveland said, the state could end the unregulated hunting.
Hippos are also subject to unregulated hunting and poaching.
Due to unregulated hunting, wild turkeys were at one point completely gone from this area.
"The entire Northeast was environmentally pauperized by unregulated hunting and egg collecting."
Although extremely rare in its native habitat due to unregulated hunting, it is quite common in captivity.
Deforestation, mining activities, and unregulated hunting, have diminished the country's wildlife diversity rapidly.