Our roosting house is set up in a U shape. So we can start at one end and work our way around. Chickens do not see well at night, or choose not to see well, and generally will not go far if they jump from the roost. There is usually a bit of squawking but normally they just cluck a bit of resistance especially if it is birds that have not been handled much. If you use a flashlight very little as in put your hand over the end so it gives off just a bit of light to see, pick the bird and either just turn away from the others to clip or move out of the roosting house to clip and then return the bird to its original spot it usually goes pretty smoothly. The less light on the birds the less excited they get. If they can't see what is going on then all the better. If your birds have not been handled a lot, if they start to get excited when you pick them off the roost, just cuddle them against your body and pet them under their chin. Even the awnryest roosters like to be cuddled if they can't see. Once they calm down then clip them.
