We have just one foal due in 2010, and that won't be until early June--possibly the 3rd week of May if the mare goes early as she often does. That's a bit later that ours usually arrive but we had waited a bit, thinking that we wouldn't breed anyone this year. Then we decided yes, we'd try one breeding to our young palomino stallion and I think when we decided that the mare we chose had just gone out of heat. By the time she came into heat again it was getting on in July.
Thank goodness we don't have any "surprise" foals due this winter--this country is much too cold for winter foalings. I'm thinking that by late May we won't even need to get our foal blankets out, though having said that....the one year we did have a huge snowstorm on May 14th, with one mare that foaled in the middle of that storm. We were lucky that she didn't have any trouble, because there was no way the vet could have got here in that storm.