I thought I would share this. I ordered a No Crow Collar, but it was too wide for my chickens. So I made one. Basically you need no sew velcro. The loop side (soft side) should be wider than the hook side. The length is based upon your chicken. I managed to find loop side velcro fabric. I cut 1.25"x8" velcro fabric and sewed .75x3" hook side down the middle. I also rounded all the corners. The loop side should be touching the chicken's neck, the hook side should be facing away from the chicken's neck.