Endocrine and Body Weight Changes of Nesting and Non-Nesting Canada Geese

Nesting and Migration in the Introduced Canada Goose in Sweden

som med vederbörligt tillstånd av rektorsämbetet vid Umeå universitet för erhållande av filosofie doktorsexamen i ekologisk zoologi kommer att offentligen försvaras fredagen den 24 :e september 1993, kl 1300 i hörsal G, Humanisthuset. A b stract The aim of the thesis was to document patterns in breeding and migration in Swedish Canada geese Branta canadensis, to explain these against the geneti...

Sage-grouse Nesting and Brood Habitat Use in Southern Canada

Greater sage-grouse (Centrocercus urophasianus) populations have declined from 66 to 92% during the last 30 years in Canada, where they are listed as endangered. We used radiotelemetry to examine greater sage-grouse nest and brood habitat use in Alberta and assess the relationship between habitat and the population decline. We also identified the patch size at which sage-grouse were selecting n...

Evidence of Territoriality and Species Interactions from Spatial Point-Pattern Analyses of Subarctic-Nesting Geese

Quantifying spatial patterns of bird nests and nest fate provides insights into processes influencing a species' distribution. At Cape Churchill, Manitoba, Canada, recent declines in breeding Eastern Prairie Population Canada geese (Branta canadensis interior) has coincided with increasing populations of nesting lesser snow geese (Chen caerulescens caerulescens) and Ross's geese (Chen rossii). ...

Polygon Nesting and Robustness

Effects of Hatch Date and Food Supply on Gosling Growth in Arctic-Nesting Greater Snow Geese

We studied the effects of hatch date and food supply on growth of goslings of the Greater Snow Goose (Chen caerulescens atlantica) at Bylot Island, Northwest Territories, Canada. Two groups of goslings were collected and imprinted on humans, one early (n = 15) and one late (n = 19) in the hatching period (span of 5-7 days). Early and late-hatched groups were each divided into food supplement an...