Hello, feel free to RP your Gryphines here.
There is some information about the Gryphines and their home here: http://silvermoondragon.exofire.net/info.html
So far the Gryphines have not needed to leave the valley. Once more Gryphines get adopted out, there may be an official exploration RP but until then, please stick to inside the valley borders.
Please PM me with any questions you have about the Gryphines if you are unsure.