The federal government has no reservation about encroaching on the rights of drone operators;

https://www.fws.gov/uploadedFiles/Region_8/NWRS/Zone_1/Klamath_Basin_Complex/Tule_Lake/Images/media/regulation_of_drones.pdf

Launching, landing, or operating an aircraft to include unmanned aircraft (drone)from or on lands and waters administered by the US Fish and Wildlife Service is prohibited, 50 CFR 27.34.  

However, hunters can bring firarms on wildlife refuges and kill animals.

https://www.fws.gov/hunting/index.html

Sport hunting and fishing are permitted on the refuge in accordance with all state and federal regulations.

There's nothing more disconcerting to visitors and wildlife than firearms. The same consideration can be given to photography drones.

There's loopholes in the law as long as you're not "observed disturbing wildlife."

https://www.fws.gov/refuge/Nestucca_Bay/visit/rules_and_regulations.html

In addition, if a drone operator stands beyond Refuge boundaries and flies the vehicle over the Refuge, fines can be levied if the drone is observed disturbing wildlife, e.g. flushing nesting birds from an offshore island or causing resting pinnipeds to flee for the water.

Why wouldn't the same set of circumstances apply to visitors standing within refuge boundries if the main concern is "disturbing wildlife?"

Because the Laws, Regulations, and Policies are written by Government-drones who have virtually no experience, no idea, no concept of what they are writting about.

Keep voting for more government and this is the result.  Every time someone breaks the rules, the government has to make more rules to make it 'more illegal' so the people that don't follow laws can ignore more of them.  Government is out of control.

somehow I can see some hunters using drones,  all they have to do is sit in their camps send up the drone check out the area and if by chance they spot game they know exactly which area to go to.