Bufflehead (Bucephala albeola)

2020 ◽  
Author(s):  
Gilles Gauthier
Keyword(s):  
Bucephala Albeola

Bufflehead (Bucephala albeola)

2014 ◽  
Author(s):  
Gilles Gauthier
Keyword(s):  
Bucephala Albeola

scholarly journals Diversité, abondance et répartition des oiseaux aquatiques hivernant dans les eaux côtières et pélagiques du Parc marin Saguenay–Saint-Laurent

2009 ◽  
Vol 22 (2) ◽  
pp. 353-371 ◽  
Author(s):  
Jean-Pierre L. Savard
Keyword(s):  
Bucephala Clangula ◽  
Anas Rubripes ◽  
Cepphus Grylle ◽  
Mergus Serrator ◽  
Bucephala Albeola ◽  
Clangula Hyemalis

Résumé Le parc marin Saguenay–Saint-Laurent (PMSSL) est situé dans l’une des zones les plus productives de l’estuaire du Saint-Laurent et supporte des nombres importants d’oiseaux aquatiques à l’année longue. Malgré ce fait, aucune étude détaillée n’a encore été faite sur l’utilisation des habitats côtiers de cette région par l’avifaune en hiver. Pour combler cette lacune, des inventaires aériens et terrestres ont été effectués pour mieux quantifier la répartition, l’abondance et le comportement des oiseaux aquatiques hivernant dans le PMSSL. Les résultats confirment l’importance du PMSSL pour les oiseaux aquatiques hivernant dans l’estuaire du Saint-Laurent et indiquent aussi que les oiseaux se déplacent à l’intérieur du PMSSL en fonction des marées, de l’état des glaces et des vents. Les espèces de canards les plus abondantes incluent le Harelde kakawi (Clangula hyemalis), le Harle huppé (Mergus serrator), le Garrot à oeil d’or (Bucephala clangula), le Garrot d’Islande (B. islandica) et le Canard noir (Anas rubripes). Quatre espèces de goélands s’y retrouvent en abondance, soit le Goéland arctique (Larus glaucoides), bourgmestre (L. hyperboreus), argenté (L. argentatus) et marin (L. marinus). On note aussi la présence de Guillemots à miroir (Cepphus grylle) en milieu pélagique, de Bécasseaux violets (Calidris maritima) sur les îles et îlots du large et de quelques Petits Garrots (Bucephala albeola). Les données des recensements d’oiseaux de Noël suggèrent une augmentation des effectifs de Canards noirs, Canards colverts (Anas plathyrynchos), Garrots d’Islande et Harles huppés. Par contre, on a observé un nombre inférieur de Hareldes kakawis ces dernières années.

Helminths from spring and fall migrant bufflehead ducks (Bucephala albeola) at Delta, Manitoba, Canada

1990 ◽  
Vol 68 (10) ◽  
pp. 2230-2233 ◽  
Author(s):  
Michael J. Ewart ◽  
J. D. McLaughlin
Keyword(s):  
Species Composition ◽  
Helminth Fauna ◽  
Lesser Scaup ◽  
Bucephala Albeola ◽  
Spring Migrant

The digestive tracts of one local, eight spring migrant, and 16 fall migrant bufflehead ducks (Bucephala albeola L.) collected at Delta, Manitoba, were examined for helminths. Twenty-five species (5 nematode, 8 trematode, 11 cestode, and 1 acanthocephalan) were found. Thirteen species occurred in both spring and fall migrants, four occurred in spring migrants only, and six were found only in fall migrants. The species composition of the helminth fauna of buffleheads resembles that of lesser scaup more closely than that of any other anatid species studied to date.

ROLE OF FOOD IN TERRITORIALITY AND EGG PRODUCTION OF BUFFLEHEADS (BUCEPHALA ALBEOLA) AND BARROW'S GOLDENEYES (BUCEPHALA ISLANDICA)

The Auk ◽  
2002 ◽  
Vol 119 (4) ◽  
pp. 1075 ◽  
Author(s):  
Jonathan E. Thompson ◽  
C. Davison Ankney
Keyword(s):  
Egg Production ◽  
Bucephala Islandica ◽  
Bucephala Albeola

THE BUFFLEHEAD (Bucephala albeola): A NEW HOST RECORD FOR Plasmodium

1971 ◽  
Vol 7 (1) ◽  
pp. 35-35 ◽  
Author(s):  
R. M. KOCAN ◽  
J. O. KNISLEY
Keyword(s):  
Host Record ◽  
New Host ◽  
New Host Record ◽  
Bucephala Albeola

Intra- and inter-specific competition between Barrow's goldeneye (Bucephala islandica) and bufflehead (Bucephala albeola)

1982 ◽  
Vol 60 (12) ◽  
pp. 3439-3446 ◽  
Author(s):  
Jean-Pierre L. Savard
Keyword(s):  
Intraspecific Aggression ◽  
Dabbling Ducks ◽  
Interspecific Aggression ◽  
Diving Ducks ◽  
Bucephala Islandica ◽  
Bucephala Albeola ◽  
Food Competitor

Barrow's goldeneye and bufflehead pairs defend well-delineated territories from which they exclude conspecifics. Only the male defends the territory and does so even when the female is absent. However, after the young have hatched, females of both species defend brood territories from which they exclude conspecifics. Both species are also interspecifically territorial. Barrow's goldeneye and bufflehead drakes threatened and (or) attacked 15 and 11 species, respectively. However, 55% of Barrow's goldeneye interspecific encounters were with bufflehead and 52% of bufflehead encounters were with Barrow's goldeneye. Barrow's goldeneye drakes always excluded bufflehead from their territory whereas bufflehead drakes successfully excluded yearlings, females, and unpaired Barrow's goldeneye drakes but were usually dominated by paired males. Female Barrow's goldeneye excluded all bufflehead from the brood territory and were particularly aggressive toward bufflehead broods. Food and mates are the most likely defended resources in intraspecific encounters. In interspecific encounters diving ducks were more violently attacked than dabbling ducks indicating that food may be the defended resource. Interspecific aggression of Barrow's goldeneye toward bufflehead does not appear to be misdirected intraspecific aggression but rather a directed aggression toward a food competitor and may therefore be adaptive.

scholarly journals Retinometra albeolae n.sp. (Cestoda: Hymenolepididae) from the bufflehead duck, Bucephala albeola L.

1990 ◽  
Vol 68 (6) ◽  
pp. 1086-1089
Author(s):  
Michael J. Ewart ◽  
J. Daniel McLaughlin
Keyword(s):  
Apparent Lack ◽  
Vitelline Gland ◽  
Bucephala Albeola

Retinometra albeolae n.sp. is described from bufflehead ducks (Bucephala albeola L.) from Manitoba, Canada. It is armed with eight skrjabinoid rostellar hooks 69–75 μm long, and has a cirrus sac 240–480 μm long that extends to approximately the midline of mature proglottids, a trilobed ovary, and a lobed vitelline gland. Staphylepis indica and Staphylepis meggitti, currently included in the genus Retinometra, are returned to Staphylepis on the basis of proglottid morphology and the apparent lack of a cirrus stylet in both species.

scholarly journals Nest Boxes Facilitate Local-Scale Conservation of Common Goldeneye (Bucephala clangula) and Bufflehead (Bucephala albeola) in Alberta, Canada

2011 ◽  
Vol 6 (1) ◽  
Author(s):  
Robert M. Corrigan ◽  
Garry J. Scrimgeour ◽  
Cynthia Paszkowski
Keyword(s):  
Local Scale ◽  
Bucephala Clangula ◽  
Nest Boxes ◽  
Bucephala Albeola ◽  
Common Goldeneye

FUNGAL OSTEOMYELITIS IN TWO BUFFLEHEAD DUCKLINGS (BUCEPHALA ALBEOLA)

2015 ◽  
Vol 46 (3) ◽  
pp. 613-616 ◽  
Author(s):  
Jennifer L. Hurley-Sanders ◽  
R. Scott Larsen ◽  
Brigid Troan ◽  
Michael Loomis
Keyword(s):  
Bucephala Albeola ◽  
Fungal Osteomyelitis
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