. The IUCN red list of threatened species.
The biology and management of Canada geese Branta canadensis
in relation to the management of feral populations.
Reproductive ecology, bioenergetics, and experimental removals of local giant Canada geese (Branta canadensis
maxima) in central Missouri.
A generation ago, spotting Canada geese (Branta canadensis
) was a notable event in many parts of New York State.
For example, recent studies employing these methodologies documented high probabilities of site fidelity in the winter for Canada Geese, Branta canadensis
(Hestbeck et al.
However, Branta canadensis
, a related species, which usually nests on the ground, occasionally nests 'in the abandoned nest of a large bird like an osprey' according to the Audubon Water Bird Guide.(9) The poet says that the two groups of birds (who correspond to Godwin's two groups of children) differ in every possible way, 'in body, voice, place, space too, time, motion'.
In contrast, morphometric subspecies of Canada geese (Branta canadensis
) are well defined by differences in their mtDNA genomes (Shields and Wilson, 1987a; Wagner and Baker, 1990).
Immunohistochemistry and polymerase chain reaction on the brain were positive for an avian bornavirus (ABV), and partial sequencing of the matrix gene identified aquatic bird bornavirus-1 (ABBV-l), 100% identical to viruses circulating in wild Canada geese (Branta canadensis
serrator Black Brant 1321 859 Branta bernicla Canada/Cackling Goose 1972 1282 (unidentified) * Lesser Canada Goose 3060 9% 1989 Branta canadensis
parvipes Dusky Canada Goose B.
In 2009, aquatic bird bornavirus 1 was detected in free-ranging Canada geese (Branta canadensis
) and trumpeter swans (Cygnus buccinator) in Ontario, Canada (5).
The UCCA encompassed 2510 ha primarily managed as an overwintering site for Canada geese (Branta canadensis
) and flooded annually by managers during Oct.-Feb.
SPREAD OF THE RESIDENT CANADA GOOSE (BRANTA CANADENSIS
) TO NEW TERRITORY.
Many of the other articles in this issue of the Bulletin describe the dedication and resolve required to achieve recovery of a species, including an article on the riparian brush rabbit (Sylvilagus bachmani riparius), which would have gone extinct if the Service hadn't taken action, and Robert "Sea Otter" Jones' efforts to recover the Aleutian Canada goose (Branta canadensis
coli isolated from the feces of urban Canada geese (Branta canadensis
) for human virulence factors and found a 2% prevalence for fecal samples containing potential human toxins.
Similar patterns have also been described for the Canada Goose Branta canadensis
(Alderich and Raveling 1983) and for the Common Eider, in which the likelihood of egg or chick desertion is determined by both the female body mass and the size of the clutch (Erikstad et al.