Each year free-roaming and feral cats kill hundreds of million of birds in the United States. One controversial solution to deal with the feral cat problem is trap, neuter and release. However, evidence is growing that this method is not eliminating the cat colonies or the predation of birds and other wildlife. There are other problems created by feral cats as well including threats to human health, and public nuisance issues. For more information see American Bird Conservancy's website at http://www.abcbirds.org (less info)