▁The ▁use ▁of ▁the ▁Rob el ▁pole ▁to ▁assess ▁habitat ▁for ▁sharp - ta iled ▁gr ouse ▁has ▁given ▁man agers ▁a ▁target ▁height ▁of ▁veget ation ▁structure ▁to ▁have ▁at ▁the ▁end ▁of ▁the ▁gra zing ▁season . ▁This ▁allows ▁man agers ▁to ▁set ▁the ▁appropriate ▁stock ing ▁rate ▁to ▁best ▁att ain ▁a ▁desired ▁veget ation ▁height . ▁As ▁a ▁rule ▁of ▁thumb , ▁the ▁average ▁V OR ▁reading ▁for ▁suitable ▁gr ouse ▁nest ing ▁habitat ▁is ▁ 3 . 5 in ▁( 8 . 8 9   cm ). ▁Le kk ing ▁habitat ▁can ▁be ▁managed ▁by ▁burning , ▁m ow ing , ▁clear ▁cutting , ▁and ▁gra zing ▁across ▁the ▁entire ▁range ▁of ▁the ▁sharp - ta iled ▁gr ouse ▁sub species . ▁Am mann ▁( 1 9 5 7 ) ▁found ▁that ▁le ks ▁that ▁contained ▁wo ody ▁veget ation ▁did ▁not ▁exceed ▁ 3 0 % ▁of ▁the ▁total ▁le k ▁area . ▁Similarly , ▁Mo yles ▁( 1 9 8 9 ) ▁found ▁a ▁negative ▁correlation ▁with ▁increased ▁in ▁as pen ▁trees ▁( Pop ulus ▁trem ulo ides ) ▁on ▁le kk ing ▁sites ▁and ▁the ▁number ▁of ▁displaying ▁males ▁present . ▁Tre es ▁may ▁provide ▁per ches ▁for ▁av ian ▁pred ators ▁but ▁further ▁work ▁needs ▁to ▁be ▁done ▁on ▁the ▁effects ▁of ▁tree ▁enc ro achment ▁( Man zer ▁and ▁Hann on ▁ 2 0 0 5 ). ▁ ▁Provin cial ▁bird ▁ ▁The ▁sharp - ta iled ▁gr ouse ▁is ▁the ▁provincial ▁bird