18 II. Aves für 1901. 
W. R. Butterfield. [Nucifraga macrorhyncha in England]; Ibis 
1901, 737—138. 
Derselbe. [Oceurrence of Puffinus obscurus bailloni in Sussex]; 
Bull. Br. ©. €. 11. 1901, 45. 
' W.E. Clarke. Bird Migration in Great Britain and Ireland, State- 
ment furnished to the Committee; Rep. Brit. Ass. 1900, 403—413. 
Derselbe. On some migratory and other Birds observed in 
Southern Shetland in September 1900; Ann. Scott. N. H. 1901, 5—12. 
Derselbe. On the Occurrence of Linota rostrata (Coues) a 
Greenland Redpoll, in Barra, Outer Hebrides; Ann. Scott. N. H. 1901, 
131—133. 
W. E. Clarke and T. 6. Laidlaw. On some Migratory and other 
Birds observed in Southern Shetland in September 1900; Ann. Scott. 
nat. Hist. 1901, 5—12. 
W. E. Clarke and T. H. Nelson. The Birds of Yorkshire; Trans. 
Yorksh. Union 1901, 81—112. 
A. F. Crossman. Notes on Birds observed in Hertfordshire during 
the year 1900; Trans. Hertfordsh. Soc. XI. 1901, 47—52. 
R. Elliott. The King Eider in Middlesex County; Ottowa Natural. 
15.1901, 197. 
W. Evans. Notes on the White Wagtail (Motacilla alba L.) in the 
South-East of Scotland; Ann. Scott. N. H. 1901, 12—15. 
W. 3. Gordon. Our Country Birds and how to know them: Guide 
to all Birds of Great Britain. Illustr. in Colour of every species many 
diagr. by G. Willis and R. E. Holding. London. 1901. 
F. S. Graves and P. Ralfe. Birds observed on the Calf of Man; 
Zoologist (4.) 5. 1901, 468—471. 
3. H. Gurney. Ornithological Notes from Norfolk for 1900; Zoo- 
logist (4.) 5. 1901, 121—140. 
6. H. €. Haigh. Migration of Birds in N. E. Lincolnshire during 
the Autumn of 1900; Zoologist (4.) 5. 1901, 201—211. 
3. E. Harting. A Hand-book of British Birds, showing the distri- 
bution of the resident and migratory species in the British Islands, with 
an index to the records of the rarer visitants. New and revised edition. 
35. col. pls. carefully reproduced from original drawings by the late Prof. 
Schlegel. London, 1901, 520 pp. 35 pls. 
Derselbe. Our summer migrants. Account of Migratory 
birds which pass the summer in the British Islands. New edition. 
London 1901. 
N. Heatheote. St. Kilda. London 1900. 
H. E. Howard. The Grasshopper-Warbler (Locustella naevia) 
in North Worcestershire; Zoologist (4.) 5. 1901, 60—63. 
Derselbe. On the Increase of the Starling and the Hawfinch; 
Zoologist (4.) 5. 1901, 463—467. 
W. H. Hudson. Nature in Downland. London 1901. 
F. €. R. Jourdain. On the Breeding Habits of the Swift in Derby- 
shire; Zoologist (4.) 5. 1901, 286—289. 
