Anyone have experience with semi-feral kittens? UPDATED VIDEO
I had a stray cat who gave birth before we could manage to trap her. She had 5 kittens and hid them for several weeks. Once they started coming out of hiding, I would sit and feed them and try to pat them as they ate. Any noise and they would run, any movement they would run - very skittish. Over time ,as I was trying desperately to get some help to trap them, the momma cat did move them to our shed. I have been hanging out with them as much as I can, and 2 of them let me pat them and even get on my lap and let me pick them up as long as I put them right down. 2 of the others let me pat them while they eat, but are far from tame.
Problem is, they are now getting pretty big, and I have a feral cat organization coming to trap and spay/neuter them, and then the kittens will be coming in my house to get tamed. The plan is to put the 5 kittens in my spare bathroom at first and I will spend some intesive time in there with them and my husband will too. I am worried that they have gotten too big and are past that 8 to 12 week window to domesticate them - time has just gone by too fast. They have really sharp claws, so will ask the vet to trim them while they are under anesthesia. Honestly, I've had cats all my life and have 5 of my own in the house (which will be fun to deal with when the kittens are ready to come out of the bathroom!).
Long winded, but basically I am asking for any advice as to how to tame these guys. I plan to put a box in there so that they can hide a bit at first - 2 of the 5 are REALLY shy and scared, so I want to give them a safe haven.
HELP! They are beautiful kittens and I want to do the best I can for them and give them a good chance to be pets or barn kitties.
Here is a rather dark video I took of them this morning - all 5 came out. Shows how they interact: