Heritage breeds no... They need more time than 5 months. My experience is 1 year minimum.I haven't checked in for a while!
I've settled on getting some Bourbon Reds and White Hollands next year. I'll butcher all the Hollands and save the best quality trio of Bourbons.
The problem is that the place I am ordering them from only starts selling the birds mid-way through June as day old poults. Do you think they'll have enough meat on them at five months to eat for Thanksgiving? I would only want one or two for the feast, and the rest I would happily wait to butcher.