( A^rnpyron can inum ) , 3; Slunvy Milkwoud ( A.sclr'pias speciosa ) , 1; 

 Dull Thistle ( Clrsi' im vulsare ) , 1; Gr(.>en Noedlesrass , 1; Sandberp's 

 Blue'^rass ( Poa sandbergii ) , 1; Bare Soil, T; Maximilian's ^P 



Sunflower ( Hel ianthus maxlmilianii ) , T; Silver Sagebrush, T. 

 Three isolated clumps of Silver Buffaloberry ( Shepherdia argentea ) 

 to 3 m in height occur near the downstream (NE) end of the plot, 

 and on.e clump of Common Chokecherry ( Prunus virginiana ) is found 

 near the center of the plot. Edge: Similar grassland along the 

 E and W borders; similar Silver Sagebrush flats to S; sagebrush 

 gives way to Saltgrass flats immediately downstream of the plot. 

 Elevation: 2470-2500 ft. Coverage: May 26; June 17, 18, 27, 28; 

 July 6, 7, 9;8 trips, 0520-2100. Total man-hours: IS. Census: 

 Lark Bunting, 16 (67, 27); Brewer's Sparrow, 9 (38, 15); Common 

 Yellowthroat , 8 (33, 13); Western Meadowlark, 7 (2P, 12); Grasshopper 

 Sparrow, 5 (21, 8); Eastern Kingbird, 3 (13, 5); Sorague's Pipit, 

 3 (13, 5); Mourning Dove, 2; Horned Lark, 1; Brown Thrasher, 1; ^ 

 Loggerhead Shrike, 1; Brown-headed Cowbird, 1; Vesper Sparrow, 1; 

 Chestnut-collared Longspur, 1; Mallard, +; Marsh Hawk, +; Prairie 

 Falcon, +. Total: 17 species; 59 territorial males or females 

 (246/km , 99 per 100 acres). Visitors: Gadwall, American Kestrel, 

 Sharp-tailed Grouse, Ring-necked Pheasant, Short-eared Owl, Common 

 Nighthawk, Common Flicker, Western Kingbird, Say's Phoebe, Bank 

 Swallow, Barn Swallow, Cliff Swallov;, Red-winged Blackbird, Northern 

 Oriole, Brewer ' s. Blackbird, Savannah Sparrow, Lark Sparrow, Chipping 

 Sparrow, Chestnut-collared Longspur. Remarks: nine nests were 

 found within the plot: Eastern Kingbird, 2 ( 1 with 2 eggs later 

 destroyed by weather, 1 with 4 young); Brewer's Sparrow , 2 (1 with 

 3 eggs and 1 with 4); Mallard, 1 (empty); Marsh Havk , 1(6 young); ^ 

 Brown Thrasher, 1 (contents not examined); Loggerhead Shrike, 1 



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