204 DUTCH AND ENGLISH BIRDS. 
Genus Pica. 
Pica rustica (Scopoli). 
A common resident in Holland and the Br. Islands. 
Genus Corvus. 
Corvus monedula Linn. 
A common resident in Holland and the Br. Islands. 
Corvus corone Linn. 
A common resident in Holland, England and Wales, 
rarer in Scotland and Ireland. 
Corvus cornix Linn. 
A common winter visitant to Holland. Has once been 
observed to breed in Friesland (Koller, Nederl. Vogels, p. 
33). Breeds in Scotland and Ireland, a winter visitor 
elsewhere. 
Corvus frugilegus Linn. 
A common resident in Holland and the Br. Islands. 
Corvus corax Linn. 
Resident in small numbers in Holland, but only in such 
places where large old trees are to be found. Resident in 
the Br. Isl. in suitable places. 
Genus Alaada. 
Alauda arvensis Linn. 
A common summer visitant to Holland, leaving in autumn. 
Resident in the Br. Isl. 
Alauda arborea Linn. 
A spring migrant to Holland, breeding in small num- 
bers in the province Gelderland. 
A resident in England in the South and West, a winter 
visitor to Ireland, rare in the East and North. 
Alauda cristata Linn, 
Resident in Holland breeding in the dunes and heather 
districts. A rare straggler to the south of England. 
Notes from the Leyden Museum, Vol. XV. 
