| http://www.w3.org/ns/prov#value | - Learn MoreMammalsYou will find a wide variety of mammals on the Upper Souris NWR including moose, deer, fox, porcupine, ground squirrels and bats.Learn MoreMarsh birdsThe great blue heron, American bittern and egret are just three of the marsh birds you may encounter while visiting the refuge.Learn MoreOwlsThere are nine different owl species found in North Dakota.
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