WOW! I read this and got so excited. I actually studied abroad in Euskal Herria (the Basque Country) in Northern Spain. It is a unique landscape that reminded me more of Ireland than of what I pictured Spain (deserts, sand, windmills...etc.). The seven providences in the Basque Country has wanted to split from Spain for a LONG TIME. I think their history is very mysterious... They have their own (very unique language, which is difficult to learn) and have a deep celtic influence.
I lived near Bilbao, so not too close to any livestock. I wasn't nearly as interested in chickens when I was there, as i am now...
I would LOVE to learn more about these chickens! I never knew they had their own breeds!