"Realistically, if this is all about protecting wildlife, having a chip or not does not alter a cat's hunting ability, so what is it really all about? It's really about them wanting to cull the strays out there through a lack of owner responsibility," Bartley-Burton says.
"It's not the cat's fault they've got lost. Perhaps they've moved house and the cat's gone back to where it came.
"Even if the councils themselves are not running around trying to trap a whole lot of cats, you've got these fanatical conservationists who want to kill every cat in sight, out in force seizing opportunities.
"We can't suddenly go slaughtering the world's most-loved companion animal purely because it doesn't have a microchip. "
However, Auckland Council biosecurity principal adviser Dr Imogen Bassett denies the new strategy will be enforced in suburban reserves.
"To really reiterate, although it is a regional pest management plan, it's about protecting our high biodiversity value places," Dr Bassett said.
"We're not talking about rounding up cats in urban areas, this is about managing cats in a small number of high ecological value sites where we've got a particular threatened shorebird breeding population - that sort of thing.
"Microchipping was a way we determined which cats were responsibly owned at those sites."
Despite this assurance, SPCA CEO Andrea Midgen says the mapping of the "ecologically sensitive" areas across Auckland is far too broad.
"The challenge we have at the moment with the RPMS is they've basically highlighted most of Auckland which is not going to work," Midgen said.
"There's obviously a whole lot of cats in suburbia Auckland not doing a serious amount of damage because they're well fed and we don't have a lot of native birds."
Midgen also said the RPMS operational implementation date of March 2019 was too hasty.
"They have to put some long-term plan in to start microchipping the cats, and in a period of 10 years, once all the cats have been identified, they can start eradicating, because they will know they're not owned," Midgen said.
"We're a nation of cat lovers and we've allowed them to roam free, unlike Australia, where they're used to containing cats in their properties because of predators.
"That's not our culture so we need to give people time to learn to manage that."
But Dr Bassett said threatened native Auckland species could not wait a decade.
"That's a really long time for some of our native species; we don't necessarily have that long."
The reliability of some microchips on the market has also been questioned by animal advocates; the Virbac brand microchip has repeatedly been found faulty.
Auckland Council accepted this, but said all pet owners should consult with vets on reliable brands.
Dr Bassett said there had been no time-frame proposed about how long after a stray cat was rounded up in a sensitive area it could be euthanised.
The meeting at Auckland Council on September 17 will be chaired by councillors Penny Hulse and Cathy Casey along with council biosecurity staff. Public submissions on the new pest management strategy closed on March 28.
Auckland Council was keen to stress the strategy encompasses more than 400 pests, not just cats.
Dr Bassett said cats have contributed to the local or complete extinction of nine species of native New Zealand birds.
