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OSGOOD, WILFRED HUDSON. 



1899. Chamaea fasciata and its subspecies. Biol. Soc. Wash. Proc. 13: 41-42.. 

 1901. New subspecies of North American birds. Auk 18: 179-185 (see 181-184). 



OVER, WILLIAM HENRY, and THOMS, CRAIG SHARP. 



19x1. Birds of South Dakota. S. Dak. State Geol. and Nat. Hist. Surv. Bull 9, 142. pp., 



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 OVUM. 



1875. Birds' nests and eggs. Oologist (Willard's) i: 34. 



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PARKER, SAMUEL (REV.). 



1844. Journal of an exploring tour beyond the Rocky Mountains, under the direction of 

 the A. B. C. F. M. [performed in the years 1835, '36, and '37] containing a 

 description of the geography, geology, climate, productions of the country, and 

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P[EARSON], THOMAS GILBERT. 



1911. Klamath Lake Reservation. Bird-Lore 13: 331. 



1912.. Report of the Secretary. Egret protection. Bird-Lore 14: 386. 



1913. The Green Heron. Bird-Lore 15: 198-101, illus. 



1919. Least Bittern. Bird-Lore zi: i98-zoi, illus. 



PECK, GEORGE DELRANE. 



1896. Notes on the warblers of western Oregon. Wilson Orn. Chap. Bull, n: 6-7. 



1904. The California] Vulture in Douglas Co[unty]. Oregon. Oologist zi: 55. 



1913. Winter notes. Salem, Oregon. Oologist 30: 51. 



1916. Oregon birds. Oologist 33 : izz. 



I9i7a. Shufeldt's Junco. Oologist 34: 93. 



i9i7b. Purple Finch. Oologist 34: 103. 



1934. In defense of Mr. Crow. Oologist 51: 139. 



PECK, MORTON EATON. 



191 la. Summer birds of Willow Creek Valley, Malheur County, Oregon. Condor 13: 



63-69. 

 191 ib. From field and study. Pinyon Jay at Salem, Oregon. Condor 13: 75. 



PETERS, JAMES LEE. 



1931. Check-list of birds of the world. Vol. i, 345 pp. Cambridge, Mass. 



PHILLIPS, JOHN CHARLES. 



I9zz-i9z6. A natural history of the ducks. 4 vols., illus. Boston. 

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PICKWELL, GAYLE. 



1930. The sex of the incubating Killdeer. Auk 47: 499-506, illus. 



PIPES, WADE H. 



1894. Western Warbling Vireo. The Oologist n: 13. 

 POOLE, CECIL A. 



i9Z3. Bird-Lore's twenty-third Christmas census. Monmouth, Oregon. Bird-Lore Z5: 



44- 

 I9Z4- Bird-Lore's twenty-fourth Christmas census. Monmouth, Oregon. Bird-Lore 



z6:4 9 . 



POPE, ARTHUR L. 



1891. Interesting notes from Oregon. Oologist 8: 163. 



i893a. The Sooty Grouse, Dendragapus obscurus fuliginosus. Oologist 10: 48-49. 



i893b. Notes from Yamhill County, Oregon. Oologist 10: zo3~zo4. 



1894. Queer nidification of the Sooty Grouse. Nidiologist i : 167. 

 PREBLE, EDWARD ALEXANDER. 



1908. A biological investigation of the Athabaska-Mackenzie region. U. S. Dept. 

 Agr., Biol. Surv., North Amer. Fauna Z7, 574 pp., illus. 



