Feral Fixers is one of several Trap-Neuter-Return organizations in and around Cook County (and is the only one in DuPage County that we are aware of). TripleRPets, a really fine sister TNR organization works mainly in southern Cook County but also can work with colonies elsewhere (as we do).
A recent article in DNAInfo.com discusses TripleRPets efforts in Chicago's Chinatown and discusses TNR efforts in general.
This is a very good article and well worth the read.
Well done TripleRPets!