CONTENTS. 



PAGB 



The Biology of the Tvrannid.e with Restect to their Systematic Arrangement. 



By Dr. H. von Ihering 313 



A Discussion of the Origin of Migration. By /'. .,4 . Tavemer 322 



Extracts from an Unpublished Journal of John Jambs Audubon. By Ruthven Deane. 334 



The Effect of Altitude on Bird Migration. By Wells M'. Cooke 338 



Spring Migrations of 1903. "Ry E Ion Howard Eaton 341 



The Casb of Megalestrisv%. Catharacta. By/. A. Allen 345 



Additional Notes on the Birds of the Upper Pecos. By Florence Merriam Bailey. 349 

 The Origin and Distribution of the Chestkut-backed Chickadee. By Joseph 



Grinnell 3^4 



General Notes. — Black-capped Petrel in New Hampshire, 383, PI. XXII; Holboell's Grebe in" 

 Lancaster, Mass., 383 ; European Widgeon in Southern California, 383 ; On the Evanescent 

 Ground-tint of Woodcock's Eggs, 3S4 ; How an .abnormal Growth of Bill was Caused, 3S4 ; The 

 Evening Grosbeak in Central New York in April, 3S5 ; The F^veuing Grosbeak at Beverly IMass., 

 385 ; Nelson's Sharp-tailed Sparrow in North Dakota, 385 ; Henslow's Sparrow in Chester County, 

 Pa., 386; Henslow's Sparrow at Bethlehem, Pa. — A Correction, 386 ; What has happened to the 

 Martins? 387 ; Breeding of Lawrence Warbler in New York City, 387 : Myrtle Warblers Wintering 

 in Maine, 38S; Pkyllopsiiestes versus Phylloscopus. 390; Peculiar Nesting-site of the Bluebird in the 

 Bermudas, 390; Dates of Nesting of Bermuda birds, 391 ; Unusual Records near Boston, Mass., 

 391 ; Scott Oriole, Gray Vireo and Phoebe in Northeastern New Mexico, 392. 



Recemt Literature. — Hoffmann's ' Guide to the Birds of New England and Eastern New York,' 393 ; 

 Homaday's ' The American Natural History,' 394 : The ' Baby Pathfinder to the Birds," 395 ; 

 Proceedings of the Delaware Valley Ornithological Club, 396 ; Oddi's ' Manuale d' Omitologie 

 Italiana,' 396; Boardman's 'The Naturalist of the Saint Croix,' 397; Pearson's 'Three Summers 

 among the Birds of Russian Lapland,' 398 ; Jacobs's ' The Haunts of the Golden-winged Warbler,' 

 399; Scott on the Rearing of Wild Finches by Foster-parents of other Species, 399 ; Scott on the 

 Inheritance of Song in Passerine Birds, 400; Rhoads on the Extinction of the Dickcissel East of 

 the Alleghanies, 401; Silloway's Additional Notes on the Summer Birds of Flathead Lake, 401; 

 Swarth on the Birds of the Huachuca Mountains, Arizona, 401 ; Bartsch on the Herons of the 

 District of Columbia, 402 ; Nelson on New Birds from Mexico, 403 ; Nelson's Revision of the 

 North American Mainland Species of Myiarchus, 403; Bangs on Birds from Honduras, 404; 

 McGregor on Philippine Birds, 404; Code of Botanical Nomenclature, 404. 



Correspondence. — A Method of Obtaining a Temporary Stabiliy of Names, 406. 



Notes and News. — Obituary: Edwin Sheppard, 407. Field Work of the Biological Survey, 407; 

 The Thayer Expedition to Central America, 40S : American Museum of Natural History, 408; 

 So-called ' Nature Boo'^s,' 409 ; New Ornithological Publications, 409 ; Michigan Ornithological 

 Club, 410; Marking Young Birds, 410. 



Thirteenth Supplement to the A. O. U. Check-List. 4«i 



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

 thologists' Union, is edited bj Dr. J. A. Allen, with the assistance of Mr. 

 Frank M. Chapman. 



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