We are lucky in that there are not that great a number of feral cats because the coyotes will keep that population in control here. I understand that they are a major problem where they were introduced and nothing to keep them in check.
Our coyotes have become a serious nuisance here in certain areas; they are smart and have learned to live within cities and suburban areas quietly and with stealth. They keep down the populations of rabbits, ground hogs, deer fawns; wild turkeys, and then go after the "domestic " animals because they are easy. Cats, small dogs, chickens, sheep, goats, small calves. There was a post where the one coyote went after a 2 yr old that the father had taken out of the car seat and set down on the ground when he went to get something out of the car on the other side, and grabbed the child by the seat which, luckily, was well padded by its' diaper... and tried dragging the child away screaming, and the father went after the coyote... In broad daylight in a subdivision......
They are as big a threat as anything since they have adapted so well to more suburban areas as well as out in the country. So, I guess they are equivalent to your feral cat population... except they are bigger and will attack much bigger prey.
