The history of the various forms of deer in Berkshire is of considerable interest. The red deer is a native of the county, for its remains have been found in the marsh deposits. It lived in various parks until the Commonwealth, when most of the deer were killed. It has been reintroduced and is now to be seen in Windsor Park, Calcot Park, and at Hampstead Marshall. The fallow deer lives in a more or less tame state in several parks in the county, and it is probably an original inhabitant of Berkshire, for it occurs as a fossil at Brentford, in Middlesex. The roe is certainly a native, for remains have been found in the Newbury marshes. It now lives in the woods about Virginia Water and Sunningdale. The reindeer has been found as a fossil at Windsor. An imperfect skull of the musk ox was found in a bed of gravel near Maidenhead in 1855, and is now in the Natural History Museum at South Kensington. It was the first discovery of the remains of this animal in Britain. As might be expected there are no very outstanding features in Berkshire ornithology. The midland position of the county is against any long list of foreign visitors, and there are no fens or broads to tempt the special birds affecting such localities. The heron is often to be seen, and there is a heronry at Virginia Water, and others at Coley Park, Buscot, and Wytham Abbey. Woodpeckers, as might be supposed, are more especially common in the forest districts of eastern Berkshire. The carrion crow is a resident but is very local in occurrence. The hooded crow is a rather uncommon winter visitor. The peregrine falcon often visits us, but the buzzard, which used to live and breed in the county, is now but a rare visitor. The great bustard was a resident up to the end of the eighteenth century but is now no longer to be counted as a British bird. The swans which we see on the rivers and on many lakes and ponds are for the most part private property, but there are often wild birds amongst them. Of reptiles found in Berkshire, the slow-worm, common snake, and lizard abound on the moorlands, and the first of these on the chalk; the adder is not at all common. Time was, and that not so very long ago, when the salmon might be caught in the Thames. In the reign of Edward III (1341), a petition was made to the King, complaining that salmon and other fish in the Thames were taken and destroyed by engines placed to catch the fry, which were then used for feeding pigs. The King was asked to forbid the use of these engines between London and the sea, and also to decree that no salmon be taken between Gravesend and Henley bridge in winter. A book on angling published in 1815 speaking of salmon says, "some are found in the Thames which the writer believes were justly considered to be superior to any bred in other rivers."