geoffwnz:
Are you 100% sure they are being dumped and not a feral colony that just keeps re-breeding? Kittens can get pregnant as early as 6 months old (possibly earlier) and in a colony they will just keep pumping more out until they die of essentially exhaustion from being nearly constantly either pregnant or nursing. So what you may be assuming are dumped kittens, are actually just new members of the colony seeking a food source.
There is a population with very specific fur patterns that is probably breeding. But cats with completely different colouring pop up from time to time. I know about recessive genes but it is not unreasonable to assume at least some of these are new introductions, especially because it is also not unreasonable to assume that the behaviour of stupid people has not suddenly changed for the better. We live at the end of a long rural road to nowhere with cat colonies all along it from idiots who have previously disposed of their inconveniences.
