— 35 — 



A. Trischitta. Il genere Stercorarius <'. Brisson » in Sicilia. — G. Val- 

 lon. Quale influenza puo avere avuto la guerra sulla nidificazicne e sul 

 passG degli uccelli. -- E. Ninni. Ibridismi e monstruosita in uccelli 

 esistenti nella ccllezione crnitclogica ilaliana Zarfagnini-Bertocchi. — 

 A. Ghigi. Sulla fecondità degli ibridi fra piccioni dcmestici e Columba 

 leuccnola. — N. Alippi. Gli uccelli di comparsa accidentale in Italia 

 e il loro valore per lo studio delle migrazioni. — G. Vallon. Escur- 

 sioni crnitclogiche nel Friuli, IX serie (1912). — Cacce, passaggi 

 e varie. — Recenstone. — Necrologio. — Indice dei nomi scientifici 

 e volgari. 



Dcnskc-Fugle, Viborg (1 aarg., nr I) : P. Skovgaard. Storkens 

 (Ciconia alba) Fcde. — D. O. C. S. Ringmierkningslister til 1919 

 inkl. — Fuglelivet i Viborgegnen. Nogle Data om Danske Fugle i 

 Chr. Reimers Sämling i Viborg. 



Idem { I aarg., nr 2) : P. Skovgaard. Gylp ai jydske Skovhornugler 

 (Otus vulgaris). — Duejagt i Sydvest-Frankrig. 



The Auk, Lancaster, PA., published by (( The American Orni- 

 thologists' Union (January 1921) : Alfred O. Gross. The Dickcissel 

 (Sp.za americana) of the Illinois Prairies. — Harrison F. Lewis. 

 A Nestling of the Philadelphia Vireo. — W. Dew. Miller and 

 Ludlow Griscom. Notes on Ortalis vetula and its Allies. — H. iVlcaS- 

 ley. Further Notes and Observations on the Birds of Hatley, Stan- 

 stead County, Quebec, 1919. — Horace W. Wright. Bohemian 

 V/axwing (Bombycilla garrula) in New England. — Harry C. Ober- 

 holser. Notes on North American Birds. — Harry C. Obcrhofser. 

 The Geographx Races of Cyanocitta cristata. — General notes. — 

 Recent littérature. — Correspondence. — Notes and News. 



Bird-Lac, New-^'ork (November-December 1920) : Louis Agas- 

 siz Fuertes. Cowbird (Frontispice in color). — Howard FI. Cleaves. 

 A Partridge Don Quixote. — Ernest Thompson Seton. Why do 

 Birds Bathe? — Guy A. Bailey. The Boat-Blind in the Snow. — 

 Katharine Upham Hunter. A Winter Chronicle. — - H. C. Oberhol- 

 ser. The migration of North American Birds. XIV. Cowbirds. — 

 Frank M. Chapman. Notes on the plumage of North American Birds. 



— Bird-Lore's Twenty- first Christmas Bird Census. — Notes froTi 

 field and study. — The Season. — Book news and Reviews. — Ths 

 Andubon Societies. 



Idem (January-February 1921) : R. Bruce Horsfall. Brown Cree- 

 per (Frontispice in colour) Bird-Lore's twenty-first Christmas census. 



— Bird-Lore's advisory council. — The Season. — Book news and 

 reviews. — Educational Leaflet. — The Andubon Societies. 



The Condor, Berkeley, California (November-December 1920) : 

 Alexander Wetmore. The Wing claw in Swifts. — Joseph Dixon. 

 Nesting of the Olive-Sided Flycatcher in Berkeley. — F. Seymour 

 Hersey. The probable Breeding of the Aleutian Tern in Southeastern 

 Alaska a Query. — G. Willett. Comments upon the Savety of Sra 

 Birds and upon the (( probable d occurrence of the Northern Bald 



