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Comparative breeding ecology in arctic-geese of different body size : an example in ross's and lesser snow geese
(2010-06)
Two closely-related, different-sized species of geese nest sympatrically south of the Queen Maud Gulf (QMG) in Canada’s central arctic. Following a period of high population growth rate in both species within the QMG, the ...
Effects of agricultural land use on tree swallow (Tachycineta bicolor) reproduction, body condition and diet
(2016-02-02)
Agricultural practices have intensified over the last 50 years, increasing crop production and altering the Canadian Prairie landscape by removing non-cropped habitats and wetlands. The productivity, trophic structure and ...
Comparative reproductive strategies between long-tailed ducks and king eiders at Karrak Lake, Nunavut: use of energy resources during the nesting season
(2006-08-31)
Energy demands can be particularly high in arctic-nesting birds that face harsh, unpredictable conditions during the breeding season. Consequences of these demands, particularly energy-partitioning during egg laying and ...
Migratory connectivity and differential patterns of decline in Barn Swallow (Hirundo rustica) in North America: Potential effects of factors on breeding and wintering grounds
(2013-01-17)
Populations of several Neotropical migratory bird species have experienced declines in the recent decades but long-distance migrant aerial insectivores seem to be declining at greater rates than any other group. The Barn ...
ECOTOXICOLOGICAL IMPACTS OF RUN-OF-RIVER DAMS ON THE AMERICAN DIPPER (CINCLUS MEXICANUS) AND MOUNTAIN STREAM FOOD WEBS
(2016-09-29)
Run-of-river (RoR) hydroelectric dams are an increasingly common alternate energy source on mountain streams. Despite reductions in size and greenhouse gas emissions compared to conventional impoundments, RoR dams may have ...
Carotenoids in the eggs of American coots : associations with size of eggs, local environment and diet
(2005-12-21)
I studied carotenoids in the eggs of American coots (Fulica americana) from 3 study sites in Saskatchewan, Canada. I supplemented two diet types designed to reduce carotenoids in the diet of laying coots to investigate ...
Population delineation and wintering ground influence on vital rates of white-winged scoters
(2007-05-03)
North American populations of white-winged scoters (Melanitta fusca deglandi) have declined markedly over the past several decades. The causes for decline are uncertain, but likely involve a complexity of events occurring ...