I wouldn't worry about the heifer too bad, heifers tend to be, for lack of a better phrase, stupid. And they will hide their calves and forget about them until their bag gets tight. Just check on the calf in the morning and evening and make sure he is up and looks good. It's hard to tell with the photos (tall grass) but he looks nice and long bodied, wait a week and then put up some other photos where you can see his body a little better. Looks good though, right size bw