For managing livestock you will need a few peices of modern technology to make things easier.
Lorex 720p camera system with enough coverage usually 6 night vision camera’s, wireless repeater and a wireless router.
Checking cows in the winter, here they usually go from a main holding/feeding pen into a pen behind the barn when they look ready. when you see them starting to show (butthole is sticking way out) or they are making lots of grunting put them into the barn pens to be monitored more closely. otherwise you’ll be pulling calfs to the barn while trying to make momma cow follow the calf there while you pull it on a sled(if its winter).