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How on earth?
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this post was submitted on 23 Aug 2025
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Don’t let your cats be outdoor cats. It seriously harms local bird populations. Cats are murderous little shits.
Make a little fully-fenced-in area if you think they need to be outside.
Cats kill huge numbers of birds. Most small bird species have high reproduction rates, and crowding results in higher death rates from increased disease and parasite spread, competition for food, and all the good shelter from predators being taken. Higher death rates from one cause (say, cats) results in less death rates from crowding-related causes. I haven't seen any evidence that, in general, cat hunting ends up actually impacting bird populations.
Specific species of birds in certain locations have been harmed by cats: the Wikipedia page list several examples in Australia (https://en.m.wikipedia.org/wiki/Cat_predation_on_wildlife). So it's good to have local awareness if there's a particular vulnerable population. But in general, keeping cats inside is only for their own safety and won't impact bird population one way or another.
You shared a Wikipedia link with sources[1] (and also numerous sections and assertions in the Wikipedia article itself) showing that cats generally impact wildlife populations but came to the conclusion that they don't. Am I missing something here? Is it because you're specifically focusing on birds?
[1] https://besjournals.onlinelibrary.wiley.com/doi/full/10.1111/1365-2656.13745
Free-roaming domestic cats affect wildlife through predation, disease, hybridization, and indirect fear and competition effects. Our review highlights biases and gaps in the global literature on these impacts, including a focus on oceanic islands, Australia, Europe and North America, and on rural areas, predation, impacts of unowned cats, and impacts at population and species levels. Key research advances needed to better understand cat impacts include more studies in underrepresented regions (Africa, Asia, South America), on impacts other than predation, and on management methods designed to reduce impacts. This review also supports past studies in illustrating that cats negatively affect wildlife populations and communities in most cases in which these potential impacts were evaluated
Yes, specifically focusing on birds. That is the focus I usually see when cat hunting comes up online.
It makes sense small animals that can't fly would be easier prey - and therefore more likely to be impacted by predation - but I guess only birds are cute or something.