Search results for rock ptarmigan

Plants & Animals Jun 19, 2023

Study shows obstacles slow down birds as they shift ranges in response to global warming

Two-thirds of Europe's birds have moved to cooler areas over the last 30 years, mainly to the north and east by 100 kilometers on average. They are trying to find the conditions they are best suited to under global warming. ...

Ecology Apr 20, 2022

How will climate change affect where high-elevation Alpine birds live?

A recent study published in Global Change Biology has examined where climate-sensitive bird species dependent on high-elevation habitats might survive across the European Alps in the face of climate change.

Evolution Apr 29, 2020

Foot feathering birds flock genetically together

Like trains running on separate but parallel tracks, sometimes the forces of evolution can affect different species running along these tracks in very similar ways.

Plants & Animals Apr 28, 2020

Arctic wildlife uses extreme method to save energy

Researchers from Lund University and the University of Tromsø have examined the immune system strength of the Svalbard rock ptarmigan in the Arctic. This bird lives the farthest up in the Arctic of any land bird, and the ...

Plants & Animals Nov 29, 2019

Svalbard reindeer populations rebounding from centuries of hunting

As reindeer go, the animals living on the Norwegian arctic archipelago of Svalbard might not be Santa's first choice. They're a smaller subspecies of their common mainland relatives, and to save energy they basically never ...

Plants & Animals Dec 20, 2018

For gait transitions, stability often trumps energy savings

A dog's gait, according to the American Kennel Club, is "the pattern of footsteps at various rates of speed, each distinguished by a particular rhythm and footfall." When dogs trot, for example, the right front leg and the ...

Environment Nov 20, 2014

Extreme weather in the Arctic problematic for people, wildlife

The residents of Longyearbyen, the largest town on the Norwegian arctic island archipelago of Svalbard, remember it as the week that the weather gods caused trouble.

Evolution May 5, 2014

Evolution in species may reverse predator-prey population cycles

Populations of predators and their prey usually follow predictable cycles. When the number of prey increases – perhaps as their food supply becomes more abundant – predator populations also grow.

Earth Sciences Jan 17, 2013

Extreme weather events a potent force for arctic overwintering populations

Climate change is known to affect the population dynamics of single species, such as reindeer or caribou, but the effect of climate at the community level has been much more difficult to document. Now, a group of Norwegian ...

Plants & Animals Sep 12, 2011

Brawn and speed make the grade during mate selection

Do more efficient and faster male birds win females over? New research from the United Kingdom suggests that the rock ptarmigan, the Arctic cousin of the grouse, does. University of Manchester researchers have found that ...

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