70 Aves. 
xvn. Aves. 
[1911] 
Ober den Flug der Vogel und der 
Kafer (Ungarisch) ; Lovas, 795. 
The “ vol plane ” of the flight of 
birds ; Dinelli, 335 : Tydeman, 1425. 
The evolution of the fore-limb and of 
flight ; Abel, 2. 
Untersuchungen fiber die Sclinellig- 
keit des Vogelfluges ; Thienemann, 
1378 : Knauer, 711. 
The positions assumed by birds when 
alighting from flight ; Beetham, 113. 
Some diving notes on Cormorants ; 
Clay, 281. 
Bathing methods among birds ; 
Christoleit, 264. 
Parental Relations. 
Oologisch-biologische Betrachtungen 
und Versuche an Drosseln ; Drescher, 
352. 
Cock Patridges mothering chicks 
lmtchod in an incubator ; Fortune, 424. 
Ein alter Kuckuk einen jungen 
ffittemd ; Klein, 693. 
Sexual Relations. 
Das Liebesleben in der Vogelwelt ; 
Gengler, 442. 
Sex problems in birds ; Gladstone, 
457. 
The influence of castration on the 
secondary sexual characters in 
Gallinaceous birds ; Pezard, 1046. 
The courtship display of Polyplectvon 
chinquis ; Pocock, 1067. 
The fighting and display of Machetes 
pugnax ; Grobbels, 481. 
The nuptial plumes of liotaurus 
lentiginosus ; Brewster, 178. 
Courtship of the American Golden-eye 
(Clangula clangula americana ) ; 
Brewster, 179. 
The courtship of the Red-breasted 
Merganser ( Mergus serrator) ; Townsend, 
1406. 
Dauerehe von Apusapus ; Thienemann, 
1376. 
Accoppiamento fra Anser dom. e Pavo 
dom . ; Serra, 1267. 
Paarung eines Enterichs mit Hulmern 
(Russ.) ; Skrjabin, 1295. 
Nidification (General). 
Die Bedeutung der Oologie fur die 
Systematik ; Szielasko, 1346. 
Nests and nest-building in birds ; 
Herrick, 579. 
Sur la persistance de certains 
Passereaux a pondre dans leurs nids 
apres l’enlevement des premiers oeufs; 
Rouget, 1184. 
Ueber das Sich-tot-legen-lassen von 
Vogeln ; Kreymborg, 731. 
Die tierischen Baustoffe der Vogel- 
nester ; Krohn, 733. 
Nachbarliche Beziehungen in der 
briitenden Vogelwelt unseres Vater- 
landes ; Thielemann, 1371. 
On the breeding seasons of African 
birds; Zedlitz, 1532. 
Oviposition in young Ostriches; 
Riviere, 1146. 
Toten starke Schallwirkungen Vogel- 
junge in Eiern?; Schuster, 1256. 
Nidification (Regional obser- 
vations). 
France, Eggs and nests of Corsican 
birds ; Jourdain, 659. 
Germany, Brutnotizen zur Ornis 
Marpurgensis aus dem Jahre 1910 ; 
Boxberger, 159 : Brutnotizen 1910 aus 
dem unteren Bodetale ; HUbner, 611. 
Scandinavia, On great hatches of 
raptorial birds in Denmark in the year 
1910. (Danish); N0rgaard, 967: 
Breeding habits of some British winter 
birds in northern Sweden ; Sheldon, 
1276 : Nests and eggs taken in Lapland 
figured and described ; Schulz, 1249. 
Switzerland, Nesting habits of Swiss 
birds ; FlUckiger, 407. 
Russia, Nisten der Vogel an der 
Murman-Kuste (Russ.) ; Maurodiadi, 
878. 
Pal/EAROtic Asia, Oologische Tage- 
buchnotizen aus Palastina 1910; 
Schmitz, 1242 : Nistende Vogel im Ge- 
biet Batum (Russ, -f- deutsch. R£s.) ; 
Nesterov, 942 : Nesting notes near Wei 
Hai Wei in north-east China; Jones, 
655. 
Ethiopian Region, Cameroon nests 
and eggs of various species described 
and figured ; Bates, 98 : The collection 
