224 UNIVERSITY OF COLORADO STUDIES 



Hersey, J. Clarence, "The little white egret (Ardea candidissima) in Colorado." 

 American Naturalist, Vol. X, p. 430, 1876. [Records a Boulder County specimen 

 taken in May, 1876.] 



Longmont Ledger, "The home of the crane." June 10, 1904. [Editorial description of the 

 St. Vrain heronry, but calls the birds cranes. This is corrected and other information 

 added by a letter from the present writer in the next issue, June 17, 1904, under the 

 heading "Blue herons."] 



Markman, Harvey, "Scientific expedition to northeastern Colorado. Zoology. 4. 

 Account of species seen, with distribution." University 0} Colorado Studies, Vol. 



IV, pp. 153-158, 1907. [Contains some Boulder County records.] 



McGregor, R. C, "Junco ridgwayi in Colorado." The Aich, Vol. X, p. 205, 1893. One' 



taken near Boulder. [Believed now to be hybrid.] 

 Minot, H. D., "Notes on Colorado birds." Bulletin Nuttall Ornithological Club, Vol. 



V, p. 223, 1880. [Notes species at Boulder and Nederland.] 



Oberholser, Harry C, "A new Agelaius from Canada." The Auh, Vol. XXIV, pp. 

 332-336, 1907. [Gives distribution of several subspecies, including Boulder County 

 records.] 



Ridgway, Robert, " A monograph of the Genus Leucosticte, Swainson, or gray- 

 crowned purple finches." U. S. Geol. and Geog. Surv. Terr. Bull. Vol. I, No. 1, 2d 

 ser., pp. 51-82. 1875. [Records some of Mrs. Maxwell's specimens.] 



, "Scops flammeola in Colorado." Bulletin Nuttall Ornithological Club, Vol. V, 



p. 185, 1880. [Notes specimen in Mrs. Maxwell's collection.] 



, "Mrs. Maxwell's Colorado Museum; catalogue of the birds." Field and Forest, 



Vol. II, pp. 195-198, 1887. 



, "Mrs. Maxwell's Colorado Museum; additional notes." Field and Forest, Vol. 



Ill, p. n, 1887. 



, The birds 0} North and Middle America. U. S. National Museum, Bull. No. 50, 



Parts I, II, III, IV. 



Smith, Horace G., "Random notes on the distribution of some Colorado birds, with 

 additions to the state avifauna." The Auk, Vol. XXV, pp. 184-191, 1908. [Con- 

 tains Boulder County records.] 



Sprague, W. A., "The dwarf thrush in Colorado." The Auk, Vol. XIII, p. 85, 1896. 

 [One taken at Magnolia. Author's name erroneously appears as U. A. Sprague.] 



Systematic List, Annotated 



4. Colymbus nigricollis californicus — American Eared Grebe. 



Summer resident about the plains lakes, not common. One in University collection. 

 Gale found its nest in or near the county. 



6. Podilymbus podiceps — Pied-billed Grebe. 



Common in migration. Gale found one nest. A nestling collected by Bragg in 1904 

 is in University cabinets. 



7. Gavia immer — Loon. 



I saw one on the plains, May 7, 1905. One in University cabinets taken by L. C. 

 Bragg in 1901, no date. One in possession of F. M. Marshardt taken near Boulder, 

 March 10, 1908. 



