In my opiniom, effective predator control and licensing are incompatible. Predator control is te consuming and expensive. If you're expecting people of a type usually not keen or experienced in admin to engage in extra red tape to be allowed to do an onerous chore, all you end up with is bad outcomes.
Aye to be honest in an ideal world it would be more like some sort of quota system.
But not for wot ur allowed to cull but wot has to be on ur ground.
Really not that different to how grouse moors are ran.
Number off shoot days and bag sizes depends entirely on the grouse counts if the grouse numbers can stand it as u still need to leave ur breeding population.
I honestly do think nowadays most keepers would behave responsably and not absolutely hammer them the way they might off in the past.
The mentality has changed a lot in last few decades
In various states in america for shooting wildfowl/geese they work on a quota system.
So any bag limits or bans depends entirely on how many migratory birds turn up that year.
No one wants to see any animal or birds exterminated.
But equally 100+ red kites turning up at feed stations isnae healthy either.
Ideally u could control problem animals as u want but if u ever got a visit u'd still have to have a healthy populations.
Really all irrelevant as it would never ever happen nowadays the way politics is going.
A truely sensible un emotive debate on the effects of pradation will never happen now, social media has seen to that.
And even if it was considered wot is considered a healthy population would take a bit of negotation to get levels correct.
I see a scottish wildlife study dared to suggest cats may be a problem but very quickly buried by the politicains.
Despite the fact inbreeding with domestic cats is the major problem for the scottish wildcat.
I forget the number of birds and mammals they said were killed by cats anually but it was absolutely massive, i almost fell of my seat when i heard it on the radio at lunch time.
Same with the hedgehog charties scared to really mention just how bad badgers are for hedgehogs.
And the cull has been ideal as very rare ud get permission to remove a protected predator even for a scientific study.