. The Canadian field-naturalist. 436 The Canadian Field-Naturalist Vol. 102 Beaver Meadow Farquarson's ^^ Farm Farm COURTENA BRITISH COLUMBIA ? Comox. ESilEmergent Vegetation To Royston 0 I I—< 1-^ 1 Km 3 SCALE Figure L Comox study area. were used for another experiment. An area of ' was clipped in each exclosure and at a random distance outside the exclosure. The amount of grass consumed was calculated by comparing the initial biomass with the final biomass and correcting for growth of the grass during winter. Shell crackers and shot guns, dogs, and provision of an alternate sourc
. The Canadian field-naturalist. 436 The Canadian Field-Naturalist Vol. 102 Beaver Meadow Farquarson's ^^ Farm Farm COURTENA BRITISH COLUMBIA ? Comox. ESilEmergent Vegetation To Royston 0 I I—< 1-^ 1 Km 3 SCALE Figure L Comox study area. were used for another experiment. An area of ' was clipped in each exclosure and at a random distance outside the exclosure. The amount of grass consumed was calculated by comparing the initial biomass with the final biomass and correcting for growth of the grass during winter. Shell crackers and shot guns, dogs, and provision of an alternate source of food were tested as means of discouraging swans from grazing on fields. Shell crackers and live ammunition were used to make noise, not to kill birds. Alternate foods were provided by planting Fall Rye, Secale serale, on land normally left fallow over winter. Approximately 40 ha on five different farms were seeded by aeroplane in late August 1982. Aerial application was used because silage corn on most fields had not yet been cut. Ground seeding after corn harvest would have been difficult because of fall rains, and would have been too late for good germination. Results General Behaviour and Activity Budget Feeding Behaviour. Feeding occurred through- out the 24-hour period on the estuary, and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club
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