We have moles, voles, mice, rats, and rabbits, in high numbers. I won't argue about wild cats' role in bird population declines. Other things that affect bird populations are urbanization / suburbinization, habitat loss, and maybe climate change. Some of the lost species are raptors and other predators, too. So maybe cats fill in a space where other predators have been lost, and some day there will be a new ecological balance.
Meanwhile, I'm hoping these two will concentrate on rodents. There is a neighbor who traps cats and takes them to the humane society, to protect birds. Another neighbor feeds the cats. Apparently, the local raccoons kill and eat the cat litters, as well. I will stay out of that battle.
I wonder if they visit because of the catnip I plant around the yard? There are several bunches. In past years, some of the catnip was destroyed, I assume by loose cats.
But I will also thank them if there is no vole damage this year.
