Ive personally been using chickens fro the last 8 yrs as they were never before available to me before that. The chickens I've seen were almost always properly handled in cages w/ food and ppl swung by the wings. The chickens always flip out when u take them out of the cage but once they get used to being held by someone for a few seconds they calm down IME. I personally prefer the places with live shchitta so I can do Kissuy Hadam and am less worried the chickens will be crammed into a tight cage