I have a bred heifer (1300 lbs, frame 6, body condition 6+) that came to my place in January supposedly AIed for a February 8th calf. (Nothing so far.) We are finished spring calving and poured all the cattle last week, so I put a glove on and checked her. There is a small calf in there, on its back, flails it's legs when touched. Just going on the legs, I am guessing the size to be about that of a large cat. My goal was to see if she was open, but I was surprised the calf was so small. Must be an oops! Can you give me any range on when she might calve? Can you direct me to a site where I might educate myself further on this type of thing? Thanks.