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I wish to consider your previously stated challenge, on what numbers ( evidence ) is it based ?

From your previous :'Possums and rats are no different and I would also challenge anecdotal evidence that possums ever declined significantly due to the fur market'.

We need a base number to work...

What do you believe was the maximum possum population total in NZ ?

They love grain and seeds, that's why flour works so well - visual + smell. One night driving back over Otira I saw at least 30 possums out on the road eating grain that had come off a truck that...

I dont think that Brodi is airdropped anymore ? Been a few problems:
"The impacts of brodifacoum-poisoning operations
on populations of non-target species that might have
eaten baits have been...

I dont think that Brodi is airdropped anymore ? Been a few problems:
The impacts of brodifacoum-poisoning operations
on populations of non-target species that might have
eaten baits have been...

I have nothing but admiration for the fenced sanctuaries and no criticism at all. I think we are discussing the continued poisoning drops over open bush areas.

What is the poison drop frequency / return ?

Where are the sanctuaries ( with good expanding bird populations ) that get aerial poisoning all the time ?

I dont have the records anymore but in a nutshell, when skin prices were very high the annual export sales through PGG and Wilson Neil of dried skins ( 1970's - mid 80's ) were declining each year...

Possums aren't evenly spread across forest, they use ridges and have legs to get there so I agree pretty easy to run bait stations or trap lines that will keep numbers down. After all it is because...

I think feral cats are a bigger problem than in the past - that is they have gotten bigger. Cats readily eat possum but they were a little small and light to kill an adult possum. I speculate that...

I have experience gained from working in Canada, a country declared TB free. I used to export CSL ( Australia ) Tuberculin to the USA for skin testing Elk and was involved when domestic Elk in...