Get a bathroom scale, weigh yourself. Then pick up each hen and weigh yourself with each hen in your hands. Subtract what you weigh from what you and the hens weigh to give you total chicken weight .
Mix up a bucket of their feed with about a quart of water that has the right amount of wormer in...
It's getting hard to find Valbazen in a few areas lately. SafeGuard goat wormer (Fenben) works great though. If I remember correctly, it's about 22.5ml/lb for chickens. Same as for goats or dogs. Matter of fact, I just treated my puppy for giardia (beaver fever) with it and it knocked the...