I foster for a small cat charity (around 160 cats helped/homed last year) - we had a large amount of kittens in over X Mas, I think we had about 10 of them, they all did go really quickly as soon as we started homing in Jan. We have had kittens in Feb, and we currently have kittens in now, some ready this week, some at the end of May - and it isn't strictly kitten season yet. The local RSPCA have had kittens and puppies all year so far. We didn't have that many kittens the December before though. Of course there is a kitten overpopulation - there always will be, the only way we wont is if the only kittens born are to people who have screened both parents, and carefully matched them, and also done their timings. Sadly, I dont think we will ever see that happen. We haven't had any true feral kittens in yet, but they were ones that had the potential to be feral if we couldn't help. IT does hamper the adults finding homes though, we had an 8 year old homed yesterday, she has been with us since October!! I hope the 2.5 and 6yo's here find it easy for a home, the 2.5yo has been here 5 weeks though.