^"I's^"] ^^^^^^^^ ^'f<i-' of Fori Keogh, Moniana. 2I5 



58. Melanerpes erythrocephalus. — Common. Breeds. 



59. Colaptes cafer. — Common. Breeds. Sent twenty-five skins to Dr. 

 J. A. Allen, American Museum of Natural History, New York Citj'. He 

 wi-ites me of them : " The series as a whole is one of special intei-est, the 

 specimens all coming from localities within the range of the interbreeding 

 of C. auratus and C. cafer. There is not a specimen in the whole series 

 that is strictly C. cafer, though several approach true cafer very strongly. 

 The greater part are much more cafer than auratus. In a few the char- 

 acters of the two species are about equally represented. In one or two 

 the auratus characters prevail. No two specimens are quite alike, while 

 the combination of characters is often peculiar and very interesting." 



60. Chordeiles virginianus henryi. — Common. Breeds. 



61. Tyrannus tyrannus. — Common. Breeds. Not as numerous as 

 T. vcrticalis. 



62. Tyrannus verticalis. — Abundant. Breeds. For six successive 

 summers a pair repaired and used a nest in a tree close to my quarters. 



63. Sayornis saya. — Common. Breeds. Nests under eaves of build- 

 ings about the Fort and mider sandstone rocks in the Bad Lands. 



64. Contopus richardsonii. — Common. Breeds. 



65. Empidonax pusillus. — One specimen, June 8. 



66. Empidonax minimus. — Not common. Taken as late as May 31. 



67. Empidonax hammondi.— Two specimens, — ^ an adult July 17, and a 

 young bird June 8. 



68. Otocoris alpestris arenicola. — -Abundant. Must breed here, but I 

 have never found a nest. They are present in varying numbers the 

 entire year. In the fall of 1889 I sent one hundred and eighteen skins of 

 birds taken every month in the year to the American Museum of Natural 

 History, New York. Thej ivere examined by Mr. Jonathan Dwight, Jr. 

 and pronounced to be " all arenicola.'''' 



69. Pica pica hudsonica. — Common. Breeds. Some seen throughout 

 the year. 



70. Corvus corax sinuatus. — Not common. 



71. Corvus americanus. — Not common. A small tiock sometimes 

 seen at the Fort garbage dump. More common at Tongue River Agency, 

 Lame Deer, Montana. About as many in winter as in summer. 



72. Molothrus ater. — Abundant. Breeds. Nests on the ground seem 

 to be preferred as the receptacle of its eggs. 



73. Xanthocephalus xanthocephalus. — Abundant in suitable localities. 

 Breeds. As to the males tlocking by themselves in the breeding season, 

 I can only say that on June 18, 1889, I saw^ a flock of about seventy-five 

 some half a mile from their nesting place and could not see a female 

 among them. 



74. Agelaius phceniceus. — Common. Breeds. Have found their nests 

 within a foot from those of the Yellow-headed Blackbird. No signs of 

 quarelling between the two kinds. 



75. Sturnella magna neglecta. — Abundant; breeds. Common by the 

 middle of April and many stay until near the last of October. 



