I notice some people are very selective with interference. Generally people put food to birds but if magpies arrive, they dont like them because "they are nasty birds that take chicks of other little birds"
however, these people dont see that living where they live, they took land for these birds to chase insects and more other proies. The same for pigeons, rats, etc etc. a lot of people complain they are a plague but they survive because people waste a lot of food and people dont see that.
I think I intervene in exceptional cases with wild animals. One day I saved a vole from 3 cats
. Considering cats are not natives, yes I took the little one. But if I see a bird chasing another one, I am not bothered at all. Finally they also need to eat. Since we take food from a supermarket (food already processed), sometimes we forget that an animal had to die in order to have the evening dinner.