AVES. 
41 
Homeyer, Alexander von. Ueber irregiilare Wanclerungen 
und Hauslialt eiiiiger Vogel Europa^s. Zoolog. Garten, 
18G7, pp. 121-127, 161-167, 199-204, 232-239, 269-273, 
336-341, 401-405. 
An attempt to throw light on a very difficult and most interesting 
subject, and to discover if there be any law which guides the ap- 
parently ‘‘ irregular movements of birds. These movements 
may be classed in three categories — those of real immigrants or 
species taking up their abode in localities to which they had been 
strangers, those of species which appear suddenly in great num- 
bers, and those of species whicli appear singly. The species of 
which most is said are Vultur fulvus and V. cinereus^ the northern 
Strigidee, Ampelis garrulus^ Turdus pilaris and T. iliacus, Sylvia 
tithys, Fr'ingilla serinus, the species of Loxia, TLmheriza hortu- 
lana, Alauda cristata and A. alpestris, Nucifraga caryocatacteSy 
Syrrhaptes paradoxus, Nycticorax griseus, Anas clangula, and 
Carho cormoranus , This series of articles has called forth several 
other communications to the same journal bearing on some of 
the points disputed by the autlior. 
Homeyer, Eugen von. Bemerkungen iiber einige europaische 
Drosseln. Journ. fur Orn. 1868, pp. 170-179. [See7W</ifl?«.] 
. Beitrage zur Kenntniss der Vogel Ostsibiriens und des 
Amurlandes. Tom. cit. pp. 197-206, 248-259. 
A digest, apparently very well executed, of the ornithological 
portions of the works of Von Middendorff (Sibirische Reise, 
Band ii. Th. 2, 1853), Von Schrenck (lleisen im Amurlande, 
Band i., 1860), and lladde (Reisen im Siiden von Ost-Sibirien 
— Die Festlands Ornis, 1863), which, though almost universally 
known, are not very generally accessible. The two papers (all 
that we have as yet seen) only treat of 39 species ; there is ac- 
cordingly much more to follow. 
Homeyer, Eug. F. von. Herrn Dr. Altum^s Morgenexcursion 
und die Angaben Naumann^s. Tom. cit. pp. 354-356. 
A criticism on the paper already noticed [supra, p. 38) . 
Hoyningen-Huene, Alexander Baron. Ornithologische Mit- 
theilungen aus Estland. Journ. fiir Orn. 1868, pp. 235-238. 
Notes only on the quarrelsomeness of Rubecula sylvestris and 
the breeding of Linaria ruhra and Pyrrhula vulgaris in confine- 
ment. 
Kennedy, A. W. M. Clark. The Birds of Berkshire and Buck- 
inghamshire : a contribution to the Natural History of the 
two counties. Eton and London: 1868. Sm. 8vo, pp. 232. 
The work of a boy of sixteen, of whom in due time we expect 
to hear more. [Cf, Ibis, 1868, pp. 337-339.) 
