I've always reckoned a chicken is a chicken. I've even taken flak for that cavalier approach. But, recently, the notion of Buff Orpingtons in Louisiana gave someone worry over their tolerance for heat and humidity. This prompted me to ask the following: "I have never lived where there are serious extremes of climate, so I just figure that if I could live there, then so can a chicken. (This includes places like Louisiana, or South Florida.) So what chickens are bad for certain locales. Are there breeds you should avoid because you live in a particular climate? What about REALLY hot climes, say AZ or NM? Really cold ones, like the northern areas of AK?" I've read that Chanteclers and Buckeyes were especially bred for cold tolerance and I believe that heavier birds with pea or rose combs are better suited for colder climates. By contrast, the breeds with large single combs and non-feathereed legs are better suited to warmer climes. But these are generalities, really. They just seem logical. What do you 'breed gurus' say?