I remember doing predator-prey models at uni. The issue is that the population will just grow until it’s at some kind of capacity. Cats are easier to capture and spay, but an issue there is that for every cat that lives longer, many thousands of native animals are going to die. But the cat is cuter and visible, so we help it.
For eg pigeons, what limits the population? You can’t capture and neuter every bird, so population restriction is environmental. If you add food, rather than 1000 birds you now have 1100 birds, etc. Ideally we’re being kind to a balanced population of birds that play some part in the local ecosystem, rather than one that we created and out-competes other birds because we give it a hand.
Not an expert. Experts, what’s the best outcome here?
Edit: emigrated to Sydney. Took 3 moggies with us at great expense but they’re now inside cats so we don’t annihilate the local wildlife and irritate all the neighbours (who are rightfully very protective of their native animals). Cats are happy. A friend’s mom looked after about 17 feral kittens. Now 17 grown cats that eat a lot of food made of presumably gentle cows. This is not well-thought out. But kittens are cute and have utterly hacked humans.
Put in that context it’s rather sad.
I think they are amazing, and as you say they were once integral to our lives, now just a pest.
We raised roller pigeons after a pair showed up at our farm. They obviously escaped from somewhere, as they were red and tame. Until we knew what they were, we assumed there was something wrong with them, as they couldn't fly without doing loops and flips. That's what they're bred to do.
And they're delicious, as a side note. . .
"Flying rats". OK so what is wrong with rats? They often perform a initial clean up role and live blameless lives, if we want to think of them in a positive way - they don't care. Rats and many other "pests" tend to get "out of control" thanks to mostly human interventions: dumping waste inappropriately and the like.
(1) https://www.bbc.co.uk/news/uk-scotland-tayside-central-17138990
I wonder what a humane method of population control looks like?
Pigeon feeding can lead to rats so it seems reasonable to ban that.
That'll also prevent at least the particular pigeons nesting there from building nests in other, more annoying locations, and when kept clean decreases the chance of spreading diseases both among themselves and to humans (bird flu, for example).
Some other methods of decreasing their unnecessary suffering is to just generally keep cities clean (hopefully an easy win-win?), especially of human hair: Apparently barbers and hairdressers sweeping hair cuttings out into the street are a main reason for pigeons slowly and painfully losing their toes or entire feet.