I found Duvall's discussion of the impact of cats somewhat difficult to follow, in part because he seemed to conflate observations
of managed colonies with those of unmanaged (and likely unsterilized) cats.
We support the
concept of managed colonies of unowned / feral cats on public or private property as a viable means to protect these cats and stabilize their populations.
(c) A person who violates any provision of this section shall be punishable as provided in section 103 - 3 of this Code; provided, however, a fine imposed for the first such violation shall not be less than twenty - five dollars ($ 25.00); subsequent or continued violations caretaker's removal from
management of the managed colony, or the designee's removal from the program.
Since May 2004, Bogue has assisted in the vaccination, neutering and
care of a managed colony of feral cats in his Winter Park neighborhood.
This cosmetic change does impair the animal in any way (in fact many feral cats already have damaged ears from fighting), but it is a sure sign that the cat is already spayed or neutered and is likely
part of a managed colony.
Better to have them part
of a managed colony, where they are sterilized — and often adopted, too — than to be under the radar.
Finally, it's important to note that, although rapid decline — and eventual elimination through attrition —
of managed colonies is the goal of TNR (and apparently the only acceptable outcome for the authors of The ABC Guide), reduced growth is not without its benefits.
This ensures that all cats in a colony are humanely managed and prevents shelter euthanasia of cats who are part
of managed colonies.