. La Canadian field-naturaliste. 1999 Burnett : 1952-1957 : palissage de la territoire 33 plus nombreux et les plus très chassée. Au début des années 1950, une étude aérienne des zones de reproduction de la sauvagine premier partout au Canada était devenu un événement annuel, mené conjointement avec l'United States Fish and Wildlife Service. Un inventaire annuel de l'hiver- ment la sauvagine, notant l'abondance, la répartition et l'état, a également eu lieu dans la plupart des provinces. Ensemble, les deux études ont fourni des données à partir de laquelle les estimations de la population pourrait être dérivé de base à la révision annuelle des règlements de chasse.* Le défi

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. The Canadian field-naturalist. 1999 Burnett: 1952-1957: Staking Out the Territory 33 most numerous and the most widely hunted. By the early 1950s, an aerial survey of prime waterfowl breeding areas across Canada had become an annual event, conducted jointly with the United States Fish and Wildlife Service. A yearly inventory of winter- ing waterfowl, noting abundance, distribution, and condition, also took place in most provinces. Together, the two studies provided data from which population estimates could be derived as a basis for the annual revision of hunting regulations.* The challenge of determining reliable waterfowl census figures over half a continent inspired CWS biologists to devise some innovative research meth- ods. Thousands of birds were colour-marked, band- ed, or collared in an effort to find the best way to trace their peregrinations. In 1953, aerial surveys were introduced to monitor wintering Snow Geese in the Fraser Delta. By 1956, Bemie GoUop was pub- lishing reports on the use of retriever dogs to capture flightless Mallards for banding in the Prairies. Not coincidentally, one of his articles appeared in the C.l.L. Oval, a publication sponsored by one of Canada's principal manufacturers of sporting guns and ammunition.^ Even with limited resources to draw on, the work of CWS was widely distributed. While Alex Dzubin and Bemie Gollop concentrated their attention on the ducks of prairie sloughs and potholes, Louis Lemieux and Graham Cooch were among the first in a long line of CWS biologists for whom the Snow Goose populations of the eastern Arctic would be a continuing passion. At the same time, Joe Boyer was monitoring Black Ducks and mergansers in the Maritimes, and Graham Cooch was initiating studies of eider ecology on Baffin Island in the hope that a down collecting industry might be developed as a source of income for the Inuit residents.. Less adventurous than lieldwork, perhaps, but just as essen- tial to the effectiveness of CWS, wer

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