98 



Table '^l continued. 



Species 1980 1981 Total Composition Frequency 



White-throated swift 

 Cooper's hawk 

 Yeliow-bellled sapsucker 

 Grasshopper sparrow 

 Clay-colored sparrow 

 Song sparrow 

 Solitary vlreo 

 Red-tailed hawk 



Total Observed 783 33^ 1117 



1-1 .1 1 



1-1 .1 1 



1-1 .1 1 



-11 .1 1 



-11 .1 1 



1 1 .11 



-11 .1 1 



-11 .1 1 



far the most common of these. Three active nests were located on 

 the study area (Figure 55). Two of these nests were on sandstone 

 cliffs and the other was In a pine tree (Table k2) . A pair of 

 red-tails was observed along Miller Creek in the south-central 

 portion of the study area. A nest was suspected to be in the 

 area but was not located. 



One Piolden eagle nest was located in the study area (Table 42). One 

 .juvenile eagle was fledged from the nest in 198O. The nest was 

 not used in 198I. Several eagles were observed on hunting perches 

 or flying over the study area (Figure 55). 



The bald eagle and rough-legged hawks observed were thought to be 

 migrating through the area. 



Eleven large stick nests were located during a helicopter nest 

 search in 198I (Table 42). These nests were inactive at the 

 time but may be used by red-tailed hawks, golden eagles or great- 

 horned owls. 



Marsh hawks were observed along Greenleaf, Lay and Miller Creeks 

 during the spring (Figure 55) and other times of the year (Figure 56). 

 While no nests were located, these birds undoubtedly nested in 

 the area. 



The most common raptor species in the Greenleaf-Mlller study area 

 was the American kestrel. They were seen in all portions of the 

 study area and were so numerous that individual sightings were 

 not recorded. 



Three prairie falcon aeries were located in the study area (Table 42). 

 Only one of these was active and no fledglings were observed near it. 



^ 



