In Washington, the U.S. and Britain sign a treaty to save the birds crossing their shared border
By 1916, market hunters had pushed once-abundant birds like the passenger pigeon toward extinction, and songbirds, waterfowl, and insect-eating species that crossed the Canada-U.S. border had no federal protection on either side. On August 16, 1916, the United States and Great Britain, acting for Canada, signed the Convention for the Protection of Migratory Birds in Washington, D.C. The treaty declared shared authority over birds that ignored the boundary, leading to hunting-season limits and species protections in both countries. American law would not catch up for two more years, after Congress acted and the Supreme Court ruled.
The treaty gave Woodrow Wilson's administration a legal tool whose influence outlasted the birds it protected: when Missouri sued to block the resulting federal hunting rules as an overreach into state authority, the Supreme Court's 1920 ruling in Missouri v. Holland held that a ratified treaty could expand federal power beyond what Congress alone could claim. Courts still cite it in disputes that have nothing to do with birds.
QWhat does Canada's 1994 update to its bird protection law actually do that the original did not?
Canada's Migratory Birds Convention Act started in 1917 but received a major overhaul in June 1994, adding stronger regulatory teeth around permits. Under the updated law, anyone wanting to hunt, traffic, or commercially deal in migratory birds, their eggs, or their nests must first obtain a permit, closing gaps that had existed in the original framework. The act also formalized the creation of Federal Migratory Bird Sanctuaries, giving Canada a designated network of protected land tied directly to the statute rather than relying on ad hoc provincial arrangements. Nearly eight decades passed between the original law and this rewrite, showing how long it took Canada to translate the 1916 treaty's broad language into enforceable domestic permitting rules.
QWhy did the treaty text specifically call out insect-eating birds alongside food species?
The treaty's opening language justified protection on two separate economic grounds: birds valued as food, and birds valued for destroying insects harmful to forests, forage plants, and agricultural crops. That second category mattered because it extended legal protection to songbirds and insectivorous species that no market hunter targeted for meat but that farmers and foresters depended on to control pests naturally. That framing, useful or harmless, let the agreement reach far beyond game birds into ordinary backyard and woodland species. Bundling pest control value with food value inside one legal definition let the agreement reach far beyond game birds into ordinary backyard and woodland species.
