> Free-ranging cats on islands have caused or contributed to 33 (14%) of the modern bird, mammal and reptile extinctions recorded by the International Union for Conservation of Nature (IUCN) Red List [1]
Cats are probably a leading cause of mortality in birds. [2] Domestic cats are not native to North America. The birds here would not have evolved to avoid them (and beyond that, domestic cat numbers are not limited by prey availability because they're pets bred and fed by humans).
You'll find plenty of studies with evidence that domestic cats are probably bad for bird populations. [3][4]
But to be fair, buildings/glass windows kill a lot of birds too. [5]
Suppose it's true that cats are bad for bird populations. The implication is that just because birds are dying, it's okay to snatch a cat. More than that, that cats should be imprisoned for their entire lives, when they naturally want to roam.
Someone can take one side of this ethical debate or the other, and both sides probably won't agree. I personally find it sad that people would place the well-being of birds above that of a wonderful, furry companion that clearly belongs to someone.
The logic also doesn't quite line up: I was hoping someone would try to justify why it's okay to kill flies but not birds, since that's the real counterargument to this one. Especially when they kill flies with their own hands.
So much of life boils down to "we're the apex species and we do what we want." But such is life. I find it difficult not to call out the absurdities when they appear, though.
To the topic at hand, how exactly is this quantified? I suspect that word "contributed" is doing a lot of work here. [2] seems to admit as much:
> True estimates of mortality are difficult to determine. However, recent studies have synthesized the best available data to estimated ranges of mortality to bird populations in North America from some of the most common, human-caused sources of bird mortality.
The numbers in [2] are admittedly pretty startling. But it looks like they come from one report labeled "2013a". Any info on where to find it, or what it even is? Otherwise it's easy to call [2] a citation when in fact no evidence whatsoever is being presente.
[4] is much better. https://wildlife.onlinelibrary.wiley.com/doi/10.1002/wsb.737 But cats are still only a contributory factor, not the main cause; the report says they're the second leading cause of admissions, not the first. So, high, and worth thinking about.
But again, the cost here is "removing, by force, someone's beloved pet." I'm not above saying that we should probably care about cats more than birds, because of the emotional bonds they form with humans. After all, that's why we're fine with flies being killed, right? No emotional bonds.
> The implication is that just because birds are dying, it's okay to snatch a cat.
I don't think anyone's implying that? It just seems foolish to let your cat roam about. Not only are they at risk of getting stolen, but the risks of getting injured/killed or sick (or poisoned) are so much higher than if you keep them at home.
Whenever I hear about someone who's distraught about an outdoor cat of theirs that died while outside, I feel super bad for the cat, and not quite so much for the owner. That death could have been prevented, trivially.
I believe the Loss et al. 2013a numbers from [2] come from [1] Scott R. Loss (2013).
And, sure, you can look up some other studies [6] that will make you question the accuracy of the numbers but, even if you decrease the estimate by 70%, cats are still killing a lot of birds. Instead of #1 on the [2] list maybe they're #2 (behind buildings).
It's very easy to give a cursory search and see overall North American bird populations are decreasing. Heck, even flying insect biomass is significantly down.
We don't care about people killing flies in their house. We do care about flies dying on a mass scale. Flies are important pollinators! Ecosystems need them.
A few cats killing a few birds is no big deal. Millions of cats killing hundreds of millions of birds, in an ecosystem that shouldn't have cats, is a big deal.
If we armed every American human with flyswatters and sent them outside every day with orders to kill every flying insect they saw then it would probably be very bad (though I think this imagery is also hilarious).
I don't really want to get into my full opinion on the ethics and morality of pet ownership. Stealing other people's pets is wrong. I think if one lives in North America and feels their cat needs outdoor time then it should be supervised on their own property or train it and walk it with a harness and leash. Catios are neat too.
Once again: You kill flies. Sometimes dozens of them. Your conscience is clear. That's wildly selfish of you, yet you don't seem to care about the flies. Why not? They're just as much a part of the ecosystem as the birds.
Also, this entire discussion is off-topic. The point was for vets to verify microchips, something directly related to the article.
you literally just quoted something about "respond to the central argument" to me. instead of following your own advice, you are closing your eyes, saying "off-topic" and yelling "what about!". all the while, ignoring the entire argument being put forth (alongside the dozens of citations that back the argument up).
> I'm looking after for my cat's wellbeing, not some bird's
What a selfish way to look at things. So you think it's fine to bring invasive species into a new environment and let them damage the local ecosystem? Cool cool cool.
If you were truly looking after your cat's well-being, you'd keep them inside in the first place. Their attachment to roaming about is not as strong or essential as you seem to think it is.
Suppose someone were arguing that you should imprison your own child for their entire life, because every time they go outside, they kill ants. Would you still consider it selfish to disagree?
Except "the birds" aren't your animals. I don't know why there are so many low-quality comments tonight. It's as if people will address everything except my central point, which is: you routinely kill a bunch of stuff without batting an eye. Yet in this case, we're supposed to feel sorry for the birds, even though you don't feel sorry for flies or ants.
It's my legal right to let my animal roam. You can have a problem with it as much as you'd like. Just don't put your hands on my cat, and we're fine.
As far as I can tell, we seem to be living in an age where the entire world is a bit crazy on a certain topic. Slavery used to be legal, and normal. This to me is no different. You justify keeping them indoors for their entire lives on the basis that birds might die. That's asinine, especially from hypocrites that are happy to kill flies when it suits them. Cats don't harm you, and they don't harm your animals.
I didn’t say anything about birds or flies or ants.
I have pets. They are allowed into my yard. They don’t leave my yard. If your cat enters my yard because you don’t want to crimp their free spirited wanderlust, it’s going to end up in an altercation with my pets.
>Slavery used to be legal, and normal. This to me is no different.
people pointing out how damaging your cat is and saying you should keep it inside is the same as fucking slavery?
fuck me, that is one the most out-to-lunch things i have heard someone say in a long time. slavery! jesus christ.
go up to someone who has a family that suffered as slaves. tell them that keeping a cat indoors is the same as what their family suffered. please. i will watch it when it shows up in a worldstar video.
>Cats don't harm you, and they don't harm your animals.
there are probably ~50 citations in this thread about how they do, about how they have caused the extinction of multiple species, etc. but yeah, whatever.
Cats are probably a leading cause of mortality in birds. [2] Domestic cats are not native to North America. The birds here would not have evolved to avoid them (and beyond that, domestic cat numbers are not limited by prey availability because they're pets bred and fed by humans).
You'll find plenty of studies with evidence that domestic cats are probably bad for bird populations. [3][4]
But to be fair, buildings/glass windows kill a lot of birds too. [5]
[1] https://www.nature.com/articles/ncomms2380
[2] https://www.fws.gov/library/collections/threats-birds#:~:tex...
[3] https://www.mdpi.com/1424-2818/13/7/322
[4] https://wildlife.onlinelibrary.wiley.com/doi/10.1002/wsb.737
[5] https://journals.plos.org/plosone/article?id=10.1371/journal...