Subspecies and Distribution. L.t.trimucronatusJ.Richardson,1825—NYukon,NorthwestTerritories,Nunavut,includingPrinceofWales,Somerset,KingWilliam,Baffin,andSouthamptonIs,andNManitoba(Canada). L.t.alascensisMerriam,1900—NcoastalAlaska. L.t.chrysogasterJ.A.Allen,1903—NWRussianFarEastEtoChukchiPeninsula. L.t.harroldiSwarth,1931...
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