CONTENTS. 



PAGE 



Distribution of the Mockingbird in California. By Joseph Grinnell. 



(With Map.) 293 



Description of a Species of Procellaria which is found at the North Pole. 



By Anton Rolandson Martin, Med. Stud. Translated by S. M. Gronberger. 300 



List of Birds observed in Estes Park, Colorado, from June 10 to July 18, 



1910. By Otto Widmann 304 



Two Unusual Flights of Canada Geese noted in Massachusetts during the 



Fall of 1910. . By J. C. Phillips 319 



A Study of the Nesting of the Cedar Waxwing. By Aretas A. Saunders. 323 

 Notes on the Migration of the Saw-whet Owl. By P. A. Taverner and B. H. 



Swales 329 



The English Sparrow as an Agent in the Dissemination of Chicken and 



Bird Mites. By E. H. Swing 335 



The Courtship and Migration of the Red-breasted Merganser (Mergus 



serrator). By Charles W. Townsend, M. D. . . . . . . . 341 



Other Early Records of the Passenger Pigeon.- By Alfred Hdzen Wright. 346 



General Notes. — A Case of the Migration and Return of the European Teal in Massa- 

 chusetts. 366; Records of Butorides brunnescens in Cuba, 367; "Nuptial Plumes" 

 of the American Bittern. 367: The Sandhill Crane (Grus mexicana) in Ohio, 368; 

 A Woodcock in New York City, 368: A Golden Plover in Massachusetts in April, 

 368; The Troupial at Santa Barbara, Cal., 368; The Western Evening Grosbeak 

 in Denver, Colorado, 369; An Unusual Occurrence of the Pine Grosbeak in Rhode 

 Island, 369; Orange-crowned Warbler at Youngstown, Ohio. 370; Brewster's 

 Warbler, 370; Black-throated Blue Warbler (Dendroica carulescens cairuiescens) 

 Nesting in Sterling, Mass., 371; Notes on a Massachusetts Mockingbird, 372. 



Recent Literature. — Ridgway on New Forms of Picidse, 374: Oberholser on the Fly- 

 catchers Of the Genera Hypothymis and Cyanonympha, 374; Roberts's 'The Evening 

 Grosbeak in Minnesota,' 374; Beetham's 'Photography for Bird-Lovers,' 375; 

 Matthews's 'Birds of Australia.' 376; Menegaux on the Birds of Ecuador, 376; Hell- 

 mayr's 'The Birds of the Rio Madeira,' 376; 'Feathers and Facts,' 377; Boas on 

 Rooks and on Damage done by them in Denmark, 378; Huntington's 'Our Wild 

 Fowl and Waders,' 379; Papers on Tick-eating Birds. 383; Grinnell on 'The Linnet 

 of the Hawaiian Islands.' 384; Grinnell on 'The Modesto Song Sparrow,' 384; 

 Publications Received, 385. 



Notes and News. — Obituary: Henry A. Purdie, 387; George Ernest Shelley, 3S7; Dr. 

 Gustav Edler von Hayek, 388: Dr. Carl Parrot, 388. Oologia Neerlandica, 389; 

 New Director of American Museum of Natural History, 389. Ornithological 

 Explorations: Departure of Mr. A. C. Bent for the Aleutian Islands. 389: Results 

 of Dr. Charles H. Townsend's Expedition to Lower California, 3S9; Mr. Frank M. 

 Chapman's Expedition to Western Colombia, 391: Return of the Kuser Asiatic 

 Pheasant Expedition, 391. Passage of the 'No Sale of Game Bill' by the New York 

 Legislature, 392. 



'THE AUK,' published quarterly as the Organ of the American Orni- 

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 Frank M. Chapman. 



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