[A study] show[s] [that domestic cats] eat more than 2,000 species globally – including hundreds that are of conservation concern.
“Our study sheds light on the predatory habits of one of the world’s most successful and widely distributed invasive predators,” the researchers, led by Christopher Lepczyk from Auburn University in the US, wrote in the paper.
If you want animals to come and go as they please then don’t have pets. Leave the animals in the wild. Get yourself a bird table.