I have been reading all about cold hardiness and chickens. It sounds like all of mine will be ok in the winter. I have a barred rock, red sex link, easter egger bantam, ameracauna, rhode island red, silver laced wyandotte, a japanese bantam, silkies and cochins. I was going to give my silkies and cochins a heat lamp, but it sounds like they may not need it. Am I right on this? What breeds are not cold hardy? I'm getting Seramas and I know they aren't. They will be inside.