° 1911 J Saunders, Birds of Gallatin Co., Mont. 39 



resident in cottonwood groves in the valleys. Very abundant in Bozeman. 

 This species arrives about June 10, and leaves early in September. 



99. Empidonax trailli trailli. Traill's Flycatcher. 



*100. Empidonax trailli alnorum. Alder Flycatcher. — This spe- 

 cies is a rather rare summer resident in willow and alder thickets along 

 mountain streams. I believe that specimens referable to both of the above 

 forms will be found to occur. A specimen taken on Brackett Creek on 

 May 21, 1909, proved rather puzzling as it is almost an exact intergrade, 

 but was finally referred to alnorum by Dr. Bishop. 



101. Empidonax minimus. Least Flycatcher. — Summer resi- 

 dent in the valleys. So far I have only met this species in the cottonwood 

 trees in Bozeman where it is quite abundant. It appears in the latter 

 part of May and leaves again in August. 



102. Empidonax hammondi. Hammond's Flycatcher. — Summer 

 resident in the mountains, frequenting willow and alder thickets along 

 streams and the edges of mountain parks. I found a nest of this species 

 in Sour Dough Canon, July 2, 1909. 



103. Empidonax wrighti. Wright's Flycatcher. — Common sum- 

 mer resident in the foothills, frequenting aspen groves and clumps of 

 young fir. It arrives in the latter part of May. 



104. Otocoris alpestris leucolaema. — Desert Horned Lark. — 

 Abundant summer resident in the Three Forks Valley but only locally 

 common during the breeding season in the Gallatin Valley. This bird 

 prefers grazing land and rolling grassy hills, rather than agricultural 

 districts. This species arrives very early in March and its flocks are usually 

 the first sign of the spring migration. It leaves in late November and a 

 few remain about Three Forks, in company with the next form, throughout 

 the winter. 



*105. Otocoris alpestris arcticola. Pallid Horned Lark. — Com- 

 mon winter resident in the valleys, arriving in December and leaving in 

 February or early March. 



106. Pica pica hudsonia. Magpie. — Abundant permanent resi- 

 dent, nesting in willow thickets in the valleys and in thorn-bushes and aspen 

 groves in the foothills. They begin nesting in April or May and the first 

 young are to be seen by the last of May. In the fall they may often be 

 seen in the mountains as high as 8,000 feet. 



*107. Cyanocitta stelleri annectens. Black-headed Jay. — Perma- 

 nent resident in the mountains, being usually more common in fir than in 

 pine forests. In the winter they stay about cabins and lumber camps in 

 company with Rocky Mountain Jays and Nutcrackers. In October I 

 have occasionally seen them in the valleys in willow thickets. 



*108. Perisoreus canadensis capitalis. Rocky Mountain Jay. — 

 Permanent resident in the mountains, and seen most commonly about 

 lumber camps and cabins when they are quite tame. 



109. Corvus corax sinuatus. Western Raven. — I saw a raven 

 about Ramshorn Peak in the Gallatin Range at an elevation of 9,000 feet 

 on Oct, 29, 1908. 



