Been there, done that. No more.... We bring them all into barn lots... preg check cows... move cows out to where ever we want them to be, will leave a couple cows with the calves, and leave them in the barn lot area. Cows will come right in for feed in bunk, calves follow... they are calmer with an "adult"nanny cow, to feel safer with... in a week or so, the "kept in" cows, which are usually open or shorter bred, will get moved out and by then the calves know the sound of the tractor or skid loader with silage, and come to call knowing they are going to get fed.. then there are only 2 or 3 that are going to bawl for a couple days... but they are coming right in for feed and the cows are out of sight and out of hearing....
Had a couple doing right what yours were doing... and a couple calves that would go over/under/through whatever to get back to cows.