Black Guillemot (Cepphus grylle) Science Article 3 abstract A research done by the Food and Environmental Agency had shown a significant reduction of PCBin Black guillemot eggs during the period of 1999 to 2001. This brought up the question weatherthere is a reduction of PCB in the environment, or Black guillemot has changed diet. Twoapproaches […]
Category: Alcidae
Colony attendance in a Black Guillemot colony inWest Greenland
Black Guillemot (Cepphus grylle) Science Article 5 abstract Colony attendance of Black Guillemots Cepphus grylle was studied at a colony on Skarveo in WestGreenland. Observations were conducted in the post hatching period by scan sampling birds in and near the colonyevery 30 minutes throughout five days. The rhythm of colony attendance varied diurnally, peaking in […]
Breeding Distribution and Numbers of Black Guillemots in Jones Sound, N.W.T.
Black Guillemot (Cepphus grylle) Science Article 2 abstract aerial surveys of Jones Sound, N.W.T., reveal a highly clumped distributoiof nb lack guillemotsi n the early spring and throughout thebreeding season. Black guillemots are uncommon throughout much of Jones Sound except at its mouth and in the western portion. By September,most guillemots have left the area. […]
Alaska Seabird Information Series BLACK GUILLEMOT Cepphus grylle.
Black Guillemot (Cepphus grylle) Science Article 1 abstract The Black Guillemot (Cepphus grylle) is a striking bird with almost entirely black breeding plumage, a bright, white patch on the upper wing and spotless, white underwings. Its plumage is set off with bright red legs and feet, a slender black bill, and a coral red mouth-lining. […]
The occurrence and behavior of non-breeding Horned Puffins at Black Guillemotcolonies in northern Alaska.
Black Guillemot (Cepphus grylle) Science Article 6 abstract The Black Guillemot (Cepphus grille) and Horned Puffin (Fratercula comicdata) are cavity nesting alcids that typically breed in talus. In Alaska both species breed in rock cavities as far north as Cape Lisburne (D. Roseneau, pers. comm.). No talus or rock cliffs are present north of Cape […]
Relationship between wing length and body mass in atlantic puffin chicks
Atlantic Puffin (Fratercula arctica) Science Article 2 abstract Abstract.–Ages of Atlantic Puffin (Fratercula arctica) chicks are sometimes estimated by com-paring their wing lengths with a sample of known-aged chicks from the same colony. Thetechnique is reliable if the rate of wing growth is unaffected by variation in nutrition. Recentstudies suggest that wing growth may respond […]
Pretty patterns but a simple strategy: predator-prey interactions between juvenile herring andAtlantic puffins observed with multibeam sonar
Atlantic Puffin (Fratercula arctica) Science Article 4 abstract Predator-prey interactions between Atlantic puffins (Fratercula arctica) and newly metamorphosed herring(Clupea harengus) were studied in the Lofoten-Rost area in northern Norway using a high-resolution multibeam sonarsystem. Attacks from diving puffins and predatory fish induced massive predator-response patterns at the school level,including bend, vacuole, hourglass, pseudopodium, herd, and […]
Kinematics of diving Atlantic puffins (Fratercula arctica L.): evidence for an active upstroke
Atlantic Puffin (Fratercula arctica) Science Article 3 abstract To examine the propulsion mechanism of diving Atlantic puffins (Fratercula arctica), their three-dimensional kinematics was investigated by digital analysis of sequential video images of dorsal and lateral views. During the dives of this wing-propelled bird, the wings are partly folded, with the handwings directed backwards. The wings […]
Atlantic Puffin (Fratercula arctica) chick diet andreproductive performance at colonies with highand low capelin (Mallotus villosus) abundance
Atlantic Puffin (Fratercula arctica) Science Article 1 abstract We compared nestling diet and growth, breeding phenology, breeding success, and adult mass of AtlanticPuffins (Fratercula arctica) between two seabird colonies adjacent to ocean habitat with presumed high and low capelin(Mallotus villosus) abundance in 1996-1998. We hypothesized that puffins at their colony at Gannet Islands,Labrador, where capelin […]
A NEW LONGEVITY RECORD FOR THE ANCIENT MURRELETSYNTHLIBORAMPHUS ANTIQUUS
Ancient Murrelet (Synthliboramphus antiquus) Science Article 1 abstract The Ancient Murrelet Synthliboramphus antiquus is a smallmember of the Alcidae widely distributed in the North Pacifictemperate and subarctic zones during the breeding season. Thespecies is completely nocturnal when coming and going from thecolony and mainly nests in burrows or in cavities under tree roots AKIKO SHOJI […]