406 Cooke, The Birds of Colorado. [g* 



Rockwell, R. B. The history of Colorado ornithology. Condor, XI, 

 1909, 24-32. 



An account of the collectors who have worked in the State and the 

 sections covered by their explorations. 



Rockwell, R. B. The use of Magpies' nests by other birds. Condor, 

 IX, 1909, 90-92. 



Warren, E. R. Notes on the birds of southwestern Montrose County, 

 Colorado. Condor, XI, 1909, 11-17. 



Field notes on 114 species, with many extensions of the previously 

 known range. 



Warren, E. R. Some interesting Colorado records. Condor, XI, 1909. 

 33. 



Notes on three species. 



Less extended notes on Colorado birds will be found in the 

 following articles. 



Trippe, American Naturalist, VIII, 1874, 429-430. 



Chambers, American Naturalist, X, 1876, 373. 



Packard, American Naturalist, XII, 1878, 54. 



Stone, Ornithologist and Oologist, VI, 1881, 45-46, 67. 



Smith, Ornithologist and Oologist, IX, 1884, 76. 



Anthony, Nidologist, II, 1895, 66-67. 



Taylor, Nidologist, IV, 1896, 6. 



Lowe, Nidologist, IV, 1897, 70. 



Burnett, Condor, II, 1900, 89. 



Jones, Wilson Bulletin, No. 33, 1900, 12. 



Burnett, Condor, III, 1901, 114. 



Henderson, Wilson Bulletin, VIII, 1901, 45-46. 



Lowe, Auk, XVIII, 1901, 276. 



Fisher, Condor. IV, 1902, 70. 



Smith, Auk, XIX, 1902, 290. 



Burnett, Condor, V, 1903, 156. 



Dille, Condor, V, 1903, 79. 



Felger, Auk, XX, 1903, 65 and 70. 



Henderson, Wilson Bulletin, X, 1903, 74-75. 



Warren, Wilson Bulletin, X, 1903, 87-91. 



Bergtold, Auk, XXI, 1904, 78. 



Henderson, Wilson Bulletin, XI, 1904, 27 and 92. 



Henderson, Auk, XXI, 1904, 486. 



Bailey, Condor, VII, 1905, 112. 



Bishop, Condor, VII, 1905, 141-143. 



Felger, Auk, XXII, 1905, 421. 



Henderson, Auk, XXII, 1905, 82 and 315-316. 



Hopkins, Auk, XXIII, 1906, 461. 



Felger, Condor, IX, 1907. 110. 



Felger, Auk, XXIV, 1907, 342. 



