There is no Atlantic breed in the US.Mine don't really tunnel but they are good at finding the weak spots in the fencing or the gate that was left open just slightly! I currently have a 10-12 week old chick that keeps getting into the garden area. I can't figure out how she does it. The fences are too high for her to fly over so she must have found a gap at the bottom.
Ron, I recently read that Pita Pinta are not a Mediterranean breed. They are an Atlantic breed. This is a nice introductory article with photos.
http://www.aviculture-europe.nl/nummers/07E04A04.pdf
Walt
