suncatcher, the Partridge Penedesenca and White Empordanesa are ancient Spanish breeds quite uncommon in this country, but a few very dedicated breeders (Hangtown Farms, ronott1, & ChickenCanoe are the ones I know about here on BYC, the WE came from Hangtown Farms and the PP came from ronott1) have been working to increase numbers and quality. I have read many good things about these Spanish breeds, including very high heat tolerance, while surviving the cold as well, and I'm unbelievably excited about the possibility of hatching some here and learning how they manage the climate and elevation.
I had never heard of the Partridge Penedesenca until I saw that Meyer Hatchery carries them now. That hatchery is really trying to get some of the rare breeds. They should have decent lineage too for a hatchery since they get their starter birds from good breeders. Unfortunately I haven't had good luck keeping more than 50% of their chicks alive. I think it must be the stress of shipping combined with the cold nights and maybe the elevation changes.