Canada geese populations were nearly extirpated in the early to mid-1900's due to over hunting and habitat loss. An opportunity to see or hear a flock of Canada geese was a rare experience. In the 1930's, National Wildlife Refuges worked to improve habitat for the geese and other waterfowl by improving nesting grounds in the prairie uplands, and creating or modifying wetlands for brood rearing. By the mid-1940's, the managers at Bowdoin started seeing an increase in Canada geese numbers on improved nesting habitat around the Refuge. Not the same could be said for other Refuges so in 1946, Bowdoin staff started incubating and hatching eggs, raising goslings, and transporting young geese to other Refuges (such as Medicine Lake NWR in Montana) to establish new populations. It was the great work of early Refuge managers, through improvement of habitat conditions and transplanting of geese, that greatly contributed to a tremendous come back in Canada geese. Reintroduction of Canada geese is considered a great success and now they can be seen and heard across the nation.