Unbelieveable.
Got home from school and went into the kitchen. There, on the floor, is the most beautiful little tortoiseshell kitten!!!! It clearly belongs to one of the farm cats and has wriggled through the cat flap and couldn't get out, as it's set to in only.
It's now gone behind and under a kitchen cupboard and if I look with a mirror and a light i can see it's bundled up terrified! 
What do I do? Its mum was around earlier but has buggered off now. How do I get it to come out?