For those of you that weigh calves at birth is the cold winter increasing birth weights to any degree? That's always been what I have heard but I don't know if there's anything to it. Another theory that I used to hear was that you better not feed your cattle too good before calving or the calves will get too big and you'll have trouble. I never agreed with that one but I know a lot of people that swore by it. I'd much rather have a calf that weighed a few more pounds that was vigorous at birth than one from a cow or heifer that was shorted on feed. I never saw much upside to skinny cows and weak calves.