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I could see some value to it if you are using it as part of a game management plan or if you are hog hunting a large tract of land with multiple locations where hogs hang out and you just want to narrow your focus before heading off into the woods to try and track and stalk your prey.

TPWD oversees some wild life management programs in which the land owner is supposed to report on the wildlife population that is the target of preservation and I would think that a drone with a camera would be pretty useful for this.

http://www.tpwd.state.tx.us/landwater/land/private/lip/

http://tpwd.texas.gov/huntwild/wild/game_management/