An ecosystem (world) has all sorts of niches. Pigeons (Rock Doves) are simply living and evolving according to circumstances they encounter. Some pigeons have

An ecosystem (world) has all sorts of niches. Pigeons (Rock Doves) are simply living and evolving according to circumstances they encounter. Some pigeons have been given medals during wartime (1). All organisms do what they do, because that is what they do. You do too, but you get to be retrospective about it on internet forums. Pigeons don't ... yet. "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 https://www.bbc.co.uk/news/uk-scotland-tayside-central-17138...