The fact that you could catch them means they aren't feral, they were in somebody's care. So a so-called "animal" person who keeps a cat would just discard kittens like garbage! Absolutely disgusting! So glad you found them in time and are keeping one! I'm hoping it's healthy! 
The only reason they didn't accept her at the shelter in the first place was because she was technically from a different city (I live in the DFW metroplex) and they couldn't be arsed to drive a MILE down the road to take her to the shelter for their city. 
We often have stray cats roaming in our garden (that's why I can't have an outdoor aviary for my babies). But, about a month ago, I noticed a black kitten (when the babies sounded an alarm call), and it looked like its back legs were broken. I told my dad and we went to look for it but couldn't find it. The next day, my dad saw it in the back garden and tried to feed it some meat but it crawled away very fast. It was on saturday that my dad tried to catch it to take it to the SPCA so that it could have some shelter cold nights. And it really fought so we decided to leave him/her near the swimming pool pump and I left it some cooked chicken and milk while I phoned the SPCA, which they came 4 hours later to take it. My heart was sore because it looked like it was starting to warm up to me. But the guy told me that he will phone me to let me know what the vet says. On tuesday I got a call and he said that he wanted to wait a day to tell me, but the vet had to put the kitten down because it also had cat flu. But, I'm glad that we called the SPCA because at least it died humanely rather than freeze and starve to death.This one is eating soaked dry food fine. I will be getting some canned as well today. But 5 weeks is still to young to be away from mom even if she can eat on her own. I also hope that she got enough socialization with her littermates, I do worry about seperating her from them to early as well. I need to stop worrying so much but that's really hard. It's been so hectic. It's hard to believe how disruptive such a tiny fluffball can be when you weren't expecting it. She seems to be holding her own though, even playing with a little wiffle ball.
I can see a trouble maker coming into her own. I guess we don't always get to help in the way that we want but you're right dying humanely is better than alot of the probabilities.
Judging from the number of responses on this thread I'd say you'd have help digging the holes.
Heck yeah.
She will be ok with you
This one is eating soaked dry food fine. I will be getting some canned as well today. But 5 weeks is still to young to be away from mom even if she can eat on her own. I also hope that she got enough socialization with her littermates, I do worry about seperating her from them to early as well. I need to stop worrying so much but that's really hard. It's been so hectic. It's hard to believe how disruptive such a tiny fluffball can be when you weren't expecting it. She seems to be holding her own though, even playing with a little wiffle ball.
Shaz, that's very sad.
Some of the kittens I had to bottle raise were the only kitten to survive in it's litter. They were very human bonded as you might guess, but when put with other cats once they were old enough, they did fine.
Very happy to hear that you are keeping on of the babies! 
Actually, if you caught them you should enter them into your spay neuter program...will probably save you money in the long run!!!
Congrats on your new addition! She's gorgeous!
