Table 15. Summary of 1980-81 changes in May-Julv sample abundances of 

 selected species sampled by five roadside survey routes. 

 Circle West study area.l 



Species 



1980-81 Change^ 



Sharp-tailed Grouse 

 Ring-necked Pheasant 

 Killdeer 

 Mourning Dove 

 Common Nighthawk 

 Eastern Kingbird 

 Horned Lark 

 Black-billed Magpie 

 Rock Wren 

 Brown Thrasher 

 Sprague's Pipit 

 Loggerhead Shrike 

 Yellow Warbler 

 Common Yellowthroat 

 House Sparrow 

 Western Meadowlark 

 Red-winged Blackbird 

 Rufous-sided Towhee 

 Lark Bunting 

 Savannah Sparrow 

 Grasshopper Sparrow 

 Baird's Sparrow 

 Vesper Sparrow 

 Brewer's Sparrow 

 Chestnut-collared Longspur 



NS 

 NS 

 NS 

 NS 

 NS 

 NS 

 NS 

 NS 

 NS 

 NS 



I* 

 NS 

 NS 

 NS 

 NS 

 NS 

 NS 

 NS 

 NS 

 NS 

 NS 



I* 

 NS 

 NS 

 NS 



Information for all 5 routes for May and June only; Dreyer route only for July. 



2 

 NS=no significant change; D=significant decrease: I=significant increase 



*.01<P£.05 (paired t-test) 



**P<.01 



-43- 



