I get a few bumps and scratches and there could be some very funny videos made when we are vaccinating fawns a month old. It took me about three days to do around forty of ours born to this point. I carry a small cooler with the vaccine inside and a couple syringes each time I enter the pen to do chores or just to check for new fawns. I have mowed narrow strips in one pen and all the rest I now mow weekly. They gravitate to these strips. I carry a check sheet in my pocket with an ink pin. I check these strips regularly for a fawn tag that hasn't been checked off the list as vaccinated. If I see one under three weeks I can usually sneak up and catch it from the strip of grass with my large pike dip net. From there it takes a combination of a little common sense and athleticism if doing them by your self especially. I set the cooler in the area of where the fawn is hiding. Once it is caught I try to get them out of the net quickly(large mesh net bags will tear their ear tags out avoid them). I carry them to right beside the cooler and squat on them with their heads and necks forward out the front. I then pull up a cuff of skin from the side of their neck and give them the vaccine SQ. I also check them over for any other issues. I look for clean butts, healed navels, and no chest rattle etc. I have a second syringe and antibiotics out side the cooler ready in case. The large pike nets with extending handles are very efficient for catching young fawns. If Dad is in the pen with me we work as a team to catch the wily ones. It does require some common since to recognize when you have a great opportunity to catch a particular fawn. You also can make hiding places for them that make catching them easier. Such as burying culvert pipes lengthwise on top of the ground a few inches in the soil. These make great shelters for them also.