I don't mind wingbanding older chicks, and they don't seem to have a problem with it. Day olds I won't do. I was pretty iffy the first ones I tried, but it is really rare that they really bleed or anything. I just decided to go with wb because I could do it fairly young and not have to worry about changing the legbands as much when they were growing, and I was always paranoid about missing a legband and leaving them on too long. The only tags the cows get is the BT from the vet, we do tattoo the ears though ... have read where people do tattoo their chickens on the wing webs ......