I am glad that other people get cats dumped on them too that are pregnant. We had 2 appear here in late January, one was looking like she was pregnant, the other was not. Both are female. We spotted them sleeping in the coop with the chickens but they would run away when we got too close. After a few weeks of leaving food on the pile of wood by the utility room they started at least coming toward us, no away from us. One day I was doing wash and the door was open and in came both cats like they had always done that. They walked around, rubbed on my legs and were purring up a storm. We started letting them in at night to the utility room/storage room area. They started coming to the door at dark crying to be let in. We could let them in the house and tell them to go to their room and down they would go. Smart kittys. When I started petting them and carrying them around it was evident that they both are pregnant. We now have 6 beautiful little kittens (3/13/10) from the calico one and the other hasn't had hers yet. Talk about needing to find homes.
We have a calico, a grey calico, dark tiger, black with white feet, black with white markings, yellow tiger.
AND SHE IS IN THE LIVING ROOM IN A PORTACRIB!!!!
Don't think she was a feral, definately dumped!!!