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Following the decline observed in American Black Duck wintering populations since 1955, pressure to prohibit the hunting of this duck led the United States government to decrease the daily bag limit for the species in 1983. A year later, the Canadian government followed suit, in the hope of helping the species recover. Despite these measures, the status of the American Black Duck remains a source of concern since it continues to face heavy hunting pressure, habitat loss and degradation, and competition from the Mallard.
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In 1986, Canada and the United States joined forces to institute the North American Waterfowl
Management Plan (NAWMP), which Mexico signed in 1994. One of the goals of the plan is to restore waterfowl populations to their 1970s (1970-1979) winter levels.
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