243 



Table 136. Results of small-mammal trapping in the Klrby study area. 



Total captures 

 Trap nights 



Captures/100 trap nights 

 Number of species caught 

 Species : 



?e.^om(j6auA man.icaZa.ta6 



Onychomyi tzacogoottzn. 



Mu4 mai>c.ata& 



Spzumopkltai) tn.ldzczmlA,Yizcita& 



EatamZai m-cn^mai 



Sofizx c.lnzfiza& 



Ponderosa 

 Grassland Sagebrush Pine Riparian 



22 

 681 



3. 

 4 



14 

 6 

 1 



1 



18 

 1616 

 1.1 

 2 



32 



1 



16 

 1596 

 1.0 

 2 



23 



12 

 1578 

 0.8 

 2 



10 



Reptiles and Amphibians 



Nine species of herps were observed on the study area (Table 137). 

 This list is probably not complete. Racers, bull snakes, and 

 rattlesnakes were the three most frequently encountered species. 

 Northern chorus frogs were heard along many creek bottoms and 

 stock ponds in the spring. 



A possible spotted chorus frog was captured near a playa in the 

 western part of the study area during June I98I. The only known 

 DODulation of these in Montana is found near Fort Benton in Choteau 

 County (Black 1970). The specimen is awaiting confirmation of 

 identification. 



Table 137. Amphibians and reptiles observed on the Kirby study area, 



Common Name 



Scientific Name 



1 Leopard frog 



2 Western toad 



3 Woodhouse's toad 



4 Spotted chorus frog 



5 Northern chorus frog 



6 Sagebrush lizard 



7 Racer 



8 Bull snake 



9 Prairie rattlesnake 



Rana pip^izni) 

 Bai^o bofiza& 

 Bujjo woodkoa&zl 

 ?&zada.c.fil& ztafikl 

 ? & zadacn.i.i> tfiA,6 zfiiata 

 Sczlopofiai Q>iCLC'io&ai> 

 Colabzfi comtfildtoK 

 Vyitaoph-i& mztanotzazai) 

 Cfiotatai v-ifL-ida6 



