we have a feral cat who adopted us about 18 months ago; we managed to trap her and she was spayed etc. She is still very timid and won't let us touch her so we have made a home for her in our summerhouse.
About two months ago another stray starting making an appearance- absolute skin and bone but we have been feeding him and he is filling out nicely. |He doesn't make an appearance every day though so trapping him difficult.
The last week though I noticed that he is sniffing round our girl's nether regions and following her about , before spraying everything in sight. Last night dh called me over to the summerhouse as he could hear a cat meowing (our girl never makes a sound) and there are the pair of them in the same bed- her not looking very pleased whilst he 'sings'!! 
Anyone know why he is doing this? bit worried incase the spaying wasn't done properly and she can still get pregnant 