We recently had a stray/lost cat move in and we created a cosy little nest for her in our back porch thingy, which she took to right away. The gestation period is 60-65 days.
We looked on loads of websites that had handy tips on the signs of labour (lack of appetite, clinginess) but tbh she didn't really do any of them. She was out chasing pigeons the day before she went into labour.
We knew it was near her time, just because she had been pregnant for ages. DP went in to see her (she had been sleeping) and noticed her "plug" coming out, as they say. Bit like the show that we get in labour. And then that was it, first kitten out 20 mins later followed by three more at half hourly intervals. No mess, no fuss, she cleaned them up and got them feeding all be herself and ate everything else that came out of her.
I will always remember the loud purring she did just before she gave birth each time, that was the main "sign".
It was amazing, i sat and watched the whole thing last bank Holiday Monday. it was better than Corrie. She is such a good mummy.
We are looking after mum and babies until we can get them all rehomed. She can be neutered after kittens have weaned, but she can get pregnant again two weeks after - so do watch out. HTH