Black Guillemot (Cepphus grylle)

2020 ◽  
Author(s):  
Ronald G. Butler ◽  
Daniel E. Buckley ◽  
David N. Nettleship ◽  
Peter F. D. Boesman ◽  
Ernest Garcia
Keyword(s):  
Cepphus Grylle ◽  
Black Guillemot

Low or no occurrence of extra-pair paternity in the Black Guillemot Cepphus grylle

2009 ◽  
Vol 151 (1) ◽  
pp. 247-250 ◽  
Author(s):  
Tycho Anker-Nilssen ◽  
Oddmund Kleven ◽  
Tomas Aarvak ◽  
Jan T. Lifjeld
Keyword(s):  
Extra Pair Paternity ◽  
Cepphus Grylle ◽  
Black Guillemot

Variations in Black Guillemot Cepphus grylle natal dispersal and philopatry across Britain and Ireland

Bird Study ◽  
2018 ◽  
Vol 65 (4) ◽  
pp. 564-569 ◽  
Author(s):  
Daniel T. Johnston ◽  
Robert W. Furness ◽  
Alexandra M. C. Robbins ◽  
Mark A. Taggart ◽  
Glen Tyler ◽  
...  
Keyword(s):  
Natal Dispersal ◽  
Cepphus Grylle ◽  
Black Guillemot

Black Guillemot (Cepphus grylle)

2002 ◽  
Author(s):  
Ronald G. Butler ◽  
Daniel E. Buckley
Keyword(s):  
Cepphus Grylle ◽  
Black Guillemot

Black Guillemot (Cepphus grylle)

2002 ◽  
Author(s):  
Ronald G. Butler ◽  
Daniel E. Buckley
Keyword(s):  
Cepphus Grylle ◽  
Black Guillemot

scholarly journals Contrasting assemblages of seabirds in the subglacial meltwater plume and oceanic water of Bowdoin Fjord, northwestern Greenland

2019 ◽  
Vol 77 (2) ◽  
pp. 711-720 ◽  
Author(s):  
Bungo Nishizawa ◽  
Naoya Kanna ◽  
Yoshiyuki Abe ◽  
Yoshihiko Ohashi ◽  
Daiki Sakakibara ◽  
...  
Keyword(s):  
Atlantic Water ◽  
Uria Lomvia ◽  
Little Auk ◽  
Near Surface ◽  
Tidewater Glaciers ◽  
Rissa Tridactyla ◽  
Cepphus Grylle ◽  
Black Guillemot ◽  
Calanus Hyperboreus ◽  
Subglacial Meltwater

Abstract In Greenland, tidewater glaciers discharge turbid subglacial freshwater into fjords, forming plumes near the calving fronts, and these areas serve as an important foraging habitat for seabirds. To investigate the effect of subglacial discharge on the foraging assemblages of surface feeders and divers in a glacial fjord, we conducted boat-based seabird surveys, near-surface zooplankton samplings, and hydrographic measurements at Bowdoin Fjord, northwestern Greenland in July. Foraging surface feeders (black-legged kittiwake Rissa tridactyla, glaucous gull Larus hyperboreus, and northern fulmar Fulmarus glacialis) aggregated within a plume-affected area in front of Bowdoin Glacier. This area was characterized by highly turbid subglacial meltwater and abundant large-sized zooplankton including Calanus hyperboreus, chaetognaths, and ctenophores near the surface. Surface feeders fed on these aggregated prey presumably transported to the surface by strong upwelling of subglacial meltwater. In contrast, divers (little auk Alle alle, thick-billed murre Uria lomvia, and black guillemot Cepphus grylle) foraged outside the fjord, where turbidity was low and jellyfish and Calanus copepods dominated under the influence of Atlantic water. Our study indicates spatial segregation between surface feeders and divers in a glacial fjord; surface feeders are not hindered by turbidity if taking prey at the surface, whereas divers need clear water.

Unusual hunting and feeding behaviour of polar bears on Spitsbergen

Polar Record ◽  
2013 ◽  
Vol 50 (2) ◽  
pp. 216-219 ◽  
Author(s):  
Lech Stempniewicz ◽  
Dorota Kidawa ◽  
Mateusz Barcikowski ◽  
Lech Iliszko
Keyword(s):  
Feeding Behaviour ◽  
Polar Bear ◽  
Rangifer Tarandus ◽  
Feeding Habits ◽  
The Arctic ◽  
Polar Bears ◽  
Seabird Species ◽  
Hunting Behaviour ◽  
Cepphus Grylle ◽  
Black Guillemot

ABSTRACTProlonged chasing of an adult reindeer (Rangifer tarandus) by a polar bear (Ursus maritimus) was observed both on land and in the sea, in Magdalenefjorden, northwest Spitsbergen. Polar bears were also observed catching black guillemot (Cepphus grylle) in the sea in northwest Spitsbergen and feeding on chicks in the arctic tern (Sterna paradisea) colony in Hornsund, southwest Spitsbergen. While feeding on seabird species is unsurprising, the prolonged chasing of adult reindeer is unusual for polar bear hunting behaviour. The few documented cases of polar bear hunting reindeer consist of either surprising and killing resting/sleeping prey or stalking and a short rapid chase of the reindeer. Our observations describe new feeding habits of polar bears that may be in response to decreasing seal availability due to shrinking sea-ice cover in the Arctic.

Sign in / Sign up

Export Citation Format

Share Document