At Last Some Progress on an Interminable Argument
New Zealand is one of the last countries in the world to use 10-80 poison. The government drops This poison in pellet form from helicopters throughout the bush and farmland to kill off possums--a destructive pest. For years deer stalkers and others have complained that the poison is also consumed by deer--which then go on to die painful deaths. Others have complained that birds also are vulnerable to 10-80.
This poison is used sparingly in a few countries of the world (Australia, some states in the United States, the Galapagos Islands, Israel and Japan). New Zealand is the biggest user of the poison.
Those opposing the use of 10-80 have never been in a position to prove that deer and birds are susceptible to aerially dropped 10-80. It is all allegation, conjecture, or mistaken claims of causation. Or, at least, that is how their "narrative" gets dismissed.
Now, for the first time we are aware of, some comprehensive (albeit, initial) research is being undertaken.