The influence of territorial behavior on nesting success in a population of Canada geese / Ernest Ewaschuk.
Material type:
TextSeries: Thesis ; (M.Sc.)Publication details: Edmonton, AB : University of Alberta, 1970.Description: 60 leaves : ill. ; 28 cmOnline resources: Abstract: A study of the relationship between density and territorial behavior during the period of incubation of nesting Canada geese (Branta canadensis ssp.) was conducted on a 16-acre island in Dowling Lake,Alberta. Densities of nesting geese were recorded as 8.0, 10.7, and 9.2 nests per acre for 1967 through 1969 respectively. Nesting success (hatching at least one egg varied from 60 to 27 to 69 percent for the three respective years. Coyote predation, responsible for 50 percent of nest loss in 1968, was related to low water levels. Rates of desertion remained constant over the three years at 18, 21, and 22 percent respectively. Small sizes of territories, high densities of nesting pairs, large numbers of nesting pairs, and the presence of non-territorial geese resulted in a relatively constant level of antogonism throughout incubation. Pairs that were successful in hatching all or part of their clutches always won more interactions with neighboring pairs and with non-territorial geese. Mo
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Thesis(M.Sc.)--University of Alberta, 1970.
"Fall, 1970."
Includes bibliographic references (leaves 53-56).
A study of the relationship between density and territorial behavior during the period of incubation of nesting Canada geese (Branta canadensis ssp.) was conducted on a 16-acre island in Dowling Lake,Alberta. Densities of nesting geese were recorded as 8.0, 10.7, and 9.2 nests per acre for 1967 through 1969 respectively. Nesting success (hatching at least one egg varied from 60 to 27 to 69 percent for the three respective years. Coyote predation, responsible for 50 percent of nest loss in 1968, was related to low water levels. Rates of desertion remained constant over the three years at 18, 21, and 22 percent respectively. Small sizes of territories, high densities of nesting pairs, large numbers of nesting pairs, and the presence of non-territorial geese resulted in a relatively constant level of antogonism throughout incubation. Pairs that were successful in hatching all or part of their clutches always won more interactions with neighboring pairs and with non-territorial geese. Mo