14 Aves. 
XVII. Avea. 
[1920] 
Frey, P. liber Briiten von Anas 
querquedula am Niederrhein. Larus 
marinus in der Rheinprovinz. Orn. 
Monatsb. Berlin 28 1920 (8-9). 243 
Freuchen, P. Report of the first 
Thule expedition, Scientific work : 
Zoology. Kjobenhavn Medd. Gronl. 51 
1915 (406-411). 244 
Fritsch, G. Das Blut der Haustiere 
mit neueren Methoden untersucht. 
ii. Untersuchung des Kaninchen- 
Hiihner- und Taubenblutes. Arch. ges. 
Physiol. Berlin 181 1920 (78-105). 245 
Frohawk, F. W. Migration of birds. 
London Proc. South London Ent. and 
N.H. Soc. for 1919-20 1920 (19-22). 
246 
Gabrielson, I. N. The birds of 
Marshall Co., Iowa. Des Moines Proc. 
Iowa Acad. Sci. 26 1920 (47-75). 247 
Galasse, H. Nidification du Milan 
noir en Belgique, Milvus korschun kor- 
schun (Gm.). Gerfaut Bruxelles 10 
1920 (101-102). 248 
Gammell, I. The Evening Grosbeak 
in the East. Canad. Roc. Sci. 9 1916 
(483-485). 249 
Gehring, J. G. vide Henshaw. 
Gengler, J. Baikanvogel. Ein 
ornithologisches Tagebuch (1-210) 6 
pis. Altenburg (Pierer) 1920 8vo. 250 
Gengler, J. Der Kaukasusgriinling. 
Orn. Monatsb. Berlin 28 1920 (55). 251 
Geyr von Schweppenburg, H. Frlir. 
Zur Verbreitung der Rabon-Nabol- 
kriiken. Falco Halle 16 1920 (17-26). 
252 
Ghigi, A. Sulla fecondit& degli ibridi 
fra piccioni domestici et Columba 
leuconota. Riv. Ital. Orn. Bologna 5 
1920 (21-30) 1 col. pi. 253 
Gibson, E. Further ornithological 
notes from the neighbourhood of Cape 
San Antonio, Province of Buenos 
Ayres. Part iii. Phoenicopteridse- 
Rhoidae. Ibis London 1920 (1-97). 254 
Gill, E. L. The chestnut and buff 
variety of the Partridge. Vasculum 
Hexham 6 1920 (17-19) fig. 255 
Gladstone, H. S. The authorship of 
[Sir] Charles Hastings’ Illustrations 
of the Natural History of Worcester- 
shire, London, 1834. Brit. Bds. London 
13 1920 (247-248). 256 
Glegg, W. E. Some notes from the 
Scilly Isles. Bt. Bds. London 14 1920 
(59-60). 257 
Godfrey, R. The Birds of the 
Buffalo Basin, Cape Province, III. 
S. Afric. Journ. Nat. Hist. Pretoria 2 
(79-87 215-229). 258 
Godske-Nielsen, H. Fuglenes Flug- 
under Benyttelse af Vinden. Kjoben- 
havn Ornith. Tids. 14 1920 (163-167). 
259 
Goodale, H. D. Feminized male birds. 
Genetics Princeton N.J. 3 1918 (276— 
299) 2 pis. 260 
Gordon, A. On the nesting of the 
Storm Petrel. Brit. Bds. London 13 
1920 (232-234) photo. 261 
Goring, G. t)ber Vogelschutz. 
Hannover Jahresb. niedersachs. zool. 
Ver. 5-10 1919 (34-37). 262 
Gosse, P. Notes on the birds of the 
Balearic Islands.' Avicult. Mag. London 
11 1920 (8-12 25-27) photos, and map. 
263 
Gram, IC. N&gra iakttagelser rorando 
torus valan. Fauna cch Flora Uppsala 
15 1920 (158-160). 264 
Grassmann, W. Einiges fiber 
Herbstzug, nordische Durchzfigler und 
Wintergaste in den Rokitnosfimpfen. 
Orn. Monatschr. Magdeburg 44 1919 
(49-52). 265 
Greppin, L. Beobachtungen fiber 
einige unserer oinheimschen Vogel 
und Saugetiere. Solothurn Mitt. Natf. 
Ges. 5 for 1911-14 1914 (63-94). 266 
Grinnell, O. B. A chapter of history 
and natural history in old New York. 
Nat. Hist. New York 20 1920 (23-27) 
1 text-fig. 267 
Grinnell, J. Sequestration notes. 
Auk Lancaster Pa. 37 1920 (84-88) ; 
also McAtee, W. L. ibid. (341-344). 268 
Grinnell, J. The Blue Goose as a 
bird of California. Condor Hollywood 
Cal. 22 1920 (76). 269 
Grinnell, J. The existence of Sea 
Birds a relatively safe one. Condor 
Hollywood Cal. 22 1920 (101-10). 270 
Grinnell, J. The Californian race 
of the Brewer Blackbird. Condor 
Hollywood Cal. 22 1920 (152-154). 271 
