We only have 24 cows calving of which 7 are first calving heifers. The heifers were synched and AI'd to calve 1st March and the bull went in with the cows the day I AI'd the heifers. So at this point , the day before due date, we have 16 calves on the ground of which 13 are bull calves. I rechecked my dates to make sure I hadn't had a brain fart but the dates are right. I'm wondering if the very cold winter with prolonged snow ( from 1st week in Dec to now) and the extra feed I have been throwing at them has an affect ? It's a weird one.