208 THE BIRDS OF CORIS^WALL. 



Whooper Swan ; a casual winter visitor in small flocsk 

 after long-continued frosts ; occasionally reported, from Scilly and 

 the west and once from Bude ; several flocks seen from Truro to 

 Scilly in 1890-1891, nine seen near Hayle early in February, 

 1895 ; breeds in Iceland, in Arctic Norway, Sweden, and northern 

 Russia ; in severe winters migrates as far south as Algeria. 



Bewick's Swan ; a casual visitor in severe winters ; not 

 recorded for the county since 1890 ; its breeding haunts lie to the 

 east of the White Sea ; in winter it occasionally wanders south 

 to the Mediterranean. 



Mute Swan ; introduced ; semi-domesticated throughout 

 the British Isles. 



Sheldrake ; a casual winter Visitor, common only in severe 

 weather; recorded from Scilly, the Land's End district, Falmouth, 

 Truro River, 1891, and Saltash ; breeds locally throughout the 

 western shores of Europe and in Avinter extends south to the 

 trojiic of Cancer ; is a fairly common resident in suitable localities 

 in the east of England and in Wales, but rare and local in 

 Devon, Somerset, Dorset, and Hants. 



Ruddy Sheldrake ; an accidental visitor of extreme rarity 

 from south-eastern Europe or northern Afi-ica; at least one 

 specimen shot on the Helford River in 1892, the year of the 

 great invasion. 



Mallard ; a scarce resident but usually abundant winter 

 visitor ; breeds annually in Scilly, and during the last few years 

 has nested at Bishop's Wood near Truro, on the edge of Baldhu 

 Moors, near Old Kea, at Ruan, near Constantino, and in 1898 at 

 Pendarves, Camborne ; a summer migrant to Iceland and through- 

 out western Europe, it crosses to England in immense flocks during 

 the cold months of the year and in a hard winter enormous 

 numbers may be seen in the west of the county ; breeds in 

 suitable localities throughout Euroj)e from the Arctic circle 

 southwards. 



Gadwall ; a casual winter visitor of which at least four 

 specimens have been shot in Cornwall, one at Trengwainton 

 Ponds, one at G-yllyngvase, one at St. Austell, 1864, one at King 

 Harry Passage during the severe frost of 1881 ; now semi- 

 domesticated in large numbers in Norfolk ; breeds in Iceland, 



