▁a ▁county ▁park . ▁ ▁Natural ▁history ▁ ▁Cy press es , ▁such ▁as ▁the ▁bald ▁cy press , ▁and ▁their ▁relatives ▁once ▁covered ▁much ▁of ▁the ▁northern ▁temper ate ▁zone . ▁It ▁is ▁thought ▁that ▁these ▁trees ▁disappeared ▁from ▁the ▁B CC S ▁area ▁during ▁the ▁most ▁recent ▁Ple ist oc ene ▁gla ci ation ▁(" I ce ▁Age "), ▁but ▁re app eared ▁around ▁ 5 , 0 0 0 ▁to ▁ 1 0 , 0 0 0 ▁years ▁ago ▁as ▁the ▁climate ▁war med . ▁ ▁In ▁addition ▁to ▁the ▁cy press , ▁the ▁san ctu ary ▁protect s ▁many ▁song bird s ▁( pro th on ot ary ▁war b ler , ▁water th r ush ), ▁fro gs ▁( green ▁f rog , ▁spring ▁pe eper ) ▁and ▁several ▁wild flow er ▁species ▁( card inal ▁flower , ▁jack - in - the - p ulp it ). ▁Sk unk ▁cab b ages ▁emer ge ▁early ▁each ▁spring . ▁ ▁References ▁ ▁External ▁links ▁ ▁Nature ▁Conserv ancy ' s ▁Battle ▁Creek ▁Cy press ▁Sw amp ▁San ctu ary ▁site ▁Battle ▁Creek ▁Cy press ▁Sw amp ▁- ▁Battle ▁Creek ▁Nature ▁Education ▁Society ▁Maryland ▁De pt ▁of ▁Natural ▁Resources ▁Battle ▁Creek ▁site ▁B CC S ▁National ▁Natural ▁Land mark ▁webpage ▁ ▁Category : Pro te cted ▁areas ▁of ▁Cal vert ▁County , ▁Maryland ▁Category : N ature ▁res erves ▁in ▁Maryland ▁Category : Sw amps ▁of ▁Maryland ▁Category : National ▁Natural ▁Land marks ▁in ▁Maryland ▁Category : N ature