Trap Spay/neuter Release. The only effective manner by which to reduce the feral cat population. Migratory birds are adversely affected by this adept predator & these birds are under pressure from habitat loss. My cats all wear collars with highly visible orange tape & numerous bells. As I live in a rural area, my cats are not under threat by cat hating humans as found in an urban setting. One male cat loose on the property keeps other cats away until I can catch neuter then release or keep confined. I live to neuter & had 16 in the garage at one point in my life. Now that old man Budzec across the road has passed on, his ever breeding cats no longer venture into my property to hunt or visit. I am currently down to 2. Zoot Suit & Pachuco appeared one day 2 months after Pink-Champagne -Tula-Came-To-Stay passed. They both just appeared under my bird feeder. Pachuco had the clipped ear indicating trap/neuter/release by someone else. They are both fabulous cats who get along with my parrot & no longer entertain my bird feeder. The birds know they are here & take note. Can we all get along? =0}