▁Canada ▁go ose ▁populations ▁in ▁some ▁areas ▁have ▁grown ▁substantial ly , ▁so ▁much ▁so ▁that ▁many ▁consider ▁them ▁p ests ▁for ▁their ▁dro ppings , ▁b acter ia ▁in ▁their ▁dro ppings , ▁noise , ▁and ▁confront ational ▁behavior . ▁This ▁problem ▁is ▁partially ▁due ▁to ▁the ▁removal ▁of ▁natural ▁pred ators ▁and ▁an ▁abund ance ▁of ▁safe , ▁man - made ▁bodies ▁of ▁water ▁near ▁food ▁sources , ▁such ▁as ▁those ▁found ▁on ▁golf ▁courses , ▁in ▁public ▁par ks ▁and ▁be aches , ▁and ▁in ▁planned ▁communities . ▁Due ▁in ▁part ▁to ▁the ▁inter bre eding ▁of ▁various ▁mig rat ory ▁sub species ▁with ▁the ▁introduced ▁non m ig rat ory ▁giant ▁sub species , ▁Canada ▁ge ese ▁are ▁frequently ▁a ▁year - around ▁feature ▁of ▁such ▁urban ▁environments . ▁ ▁Con tr ary ▁to ▁its ▁normal ▁migration ▁routine , ▁large ▁f lock s ▁of ▁Canada ▁ge ese ▁have ▁established ▁permanent ▁residence ▁along ▁the ▁Pacific ▁coast ▁of ▁North ▁America ▁from ▁south - western ▁British ▁Columbia ▁( specific ally ▁V ancouver ▁Island ▁and ▁British ▁Columbia ' s ▁Lower ▁Main land ), ▁south ▁to ▁the ▁San ▁Francisco ▁Bay ▁area ▁of ▁Northern ▁California . ▁There ▁are ▁also ▁resident ▁Atlantic ▁coast ▁populations , ▁such ▁as ▁on ▁Ch es ape ake ▁Bay , ▁in ▁Virginia ' s ▁James ▁River ▁regions , ▁and ▁in ▁the ▁Tri angle ▁area ▁of ▁North ▁Carolina ▁( R ale igh , ▁Dur ham , ▁Chap el ▁Hill ), ▁and ▁nearby ▁Hills borough . ▁Some ▁Canada ▁ge ese ▁have ▁taken ▁up ▁permanent