Scotland in the Early Middle Ages to be adopted for house building, often combining layers of stone with turf. Place-name evidence, particularly the use of the prefix "pit", meaning land or a field, suggests that the heaviest areas of Pictish settlement were in modern Fife, Perthshire, Angus, Aberdeen and around the Moray Firth, although later Gaelic migration may have erased some Pictish names from the record. Early Gaelic settlement appears to have been in the regions of the western mainland of Scotland between Cowal and Ardnamurchan, and the adjacent islands, later extending up the West coast in the 8th century. There is place name and archaeological
Firth of Tay after the one in Scotland. He also named nearby Dundee Island in honour of the main city on the firth. The Firth of Tay and Eden Estuary were designated a Ramsar sites on 28 July 2000, as a Special Protection Area on 2 February 2000 and as a Special Area of Conservation on 17 March 2005. Several parts are within a site of special scientific interest - Inner Tay Estuary, Monifieth Bay, Tayport-Tentsmuir Coast. The Invergowrie Bay section is a local nature reserve. The Firth of Tay is outstanding for its extensive sand and mudflats, its population of common seals