Orcadian (like Shetlandic) is a dialect of Insular Scots. It derives from a mixture of Lowland Scots and Norn, an extinct Germanic language. Last night, in Stromness, it had an airing with the launch of Orkney Stoor, a booklet from Abersee Press. The details are to be found, understandably, in The Orcadian.
Scottish Islands Explorer - remains exclusively in English