Assortative Mating and Reciprocal Difference in the Blue–Snow Goose Complex

Nature ◽  
1959 ◽  
Vol 183 (4678) ◽  
pp. 1833-1834 ◽  
Author(s):  
F. G. COOCH ◽  
J. A. BEARDMORE
Keyword(s):  
Assortative Mating ◽  
Snow Goose ◽  
Reciprocal Difference

Assortative mating and gene flow in the Lesser Snow Goose: A modelling approach

1982 ◽  
Vol 22 (2) ◽  
pp. 177-203 ◽  
Author(s):  
Joan M. Geramita ◽  
Fred Cooke ◽  
Robert F. Rockwell
Keyword(s):  
Gene Flow ◽  
Assortative Mating ◽  
Snow Goose ◽  
Lesser Snow Goose ◽  
Modelling Approach

Snow Goose (Anser caerulescens)

2020 ◽  
Author(s):  
Thomas B. Mowbray ◽  
Fred Cooke ◽  
Barbara Ganter
Keyword(s):  
Snow Goose ◽  
Anser Caerulescens

Assortative mating in a contemporary British population

1987 ◽  
Vol 14 (1) ◽  
pp. 59-68 ◽  
Author(s):  
C.G. Nicholas Mascie-Taylor
Keyword(s):  
Assortative Mating

Temporal Changes in Habitat Selection and Nest Spacing in a Colony of Ross' and Lesser Snow Geese

The Auk ◽  
1983 ◽  
Vol 100 (2) ◽  
pp. 335-343 ◽  
Author(s):  
M. Robert McLandress
Keyword(s):  
Nearest Neighbor ◽  
Average Distance ◽  
Habitat Preferences ◽  
Nearest Neighbors ◽  
Nest Density ◽  
Snow Goose ◽  
Snow Geese ◽  
Lesser Snow Geese ◽  
Average Size ◽  
Island Habitats

Abstract I studied the nesting colony of Ross' Geese (Chen rossii) and Lesser Snow Geese (C. caerulescens caerulescens) at Karrak Lake in the central Arctic of Canada in the summer of 1976. Related studies indicated that this colony had grown from 18,000 birds in 1966-1968 to 54,500 birds in 1976. In 1976, geese nested on islands that were used in the late 1960's and on an island and mainland sites that were previously unoccupied. Average nest density in 1976 was three-fold greater than in the late 1960's. Consequently, the average distance to nearest neighbors of Ross' Geese in 1976 was half the average distance determined 10 yr earlier. The mean clutch size of Ross' Geese was greater in island habitats where nest densities were high than in less populated island or mainland habitats. The average size of Snow Goose clutches did not differ significantly among island habitats but was larger at island than at mainland sites. Large clutches were most likely attributable to older and/or earlier nesting females. Habitat preferences apparently differed between species. Small clutches presumably indicated that young geese nested in areas where nest densities were low. The establishment of mainland nesting at Karrak Lake probably began with young Snow Geese using peripheral areas of the colony. Young Ross' Geese nested in sparsely populated habitats on islands to a greater extent than did Snow Geese. Ross' Geese also nested on the mainland but in lower densities than Ross' Geese nesting in similar island habitats. Successful nests with the larger clutches had closer conspecific neighbors than did successful nests with smaller clutches. The species composition of nearest neighbors changed significantly with distance from Snow Goose nests but not Ross' Goose nests. Nesting success was not affected by the species of nearest neighbor, however. Because they have complementary antipredator adaptations, Ross' and Snow geese may benefit by nesting together.

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