香蕉视频

If you鈥檝e ever seen a starling peck open a garbage bag or a grackle steal your dog pellets, you get a sense that some birds have learned to take advantage of new feeding opportunities 鈥� a clear sign of their intelligence. Scientists have long wondered why certain species of birds are more innovative than others, and whether these capacities stem from larger brains (which intuitively seems likely) or from a greater number of neurons in specific areas of the brain.

Migratory waterbirds are particularly exposed to the effects of climate change at their breeding areas in the High Arctic and in Africa, according to a new study published in .

Despite having bat-like wings, two small dinosaurs, Yi and Ambopteryx, struggled to fly, only managing to glide clumsily between the trees where they lived, according to a new study led by an international team of researchers, including 香蕉视频 Professor . Unable to compete with other tree-dwelling dinosaurs and early birds, they went extinct after just a few million years.

There鈥檚 less ice, more capelin and lots of hungry polar bears

Climate change in the eastern Arctic has already altered the travel, diet and safety of some of the most numerous birds in the circumpolar world: thick-billed murres, known as akpait in Inuktitut.

These and other changes are likely to continue, says Allison Patterson, a 香蕉视频 graduate student [with Professor Kyle Elliott] who has tracked the habits of these black-and-white birds on Hudson Bay鈥檚 Coats Island, known as Akpatordjuark in Inuktitut.

Now, a new study has found that听birds听that are able to change their behavior in this way are less likely to become听extinct听than those that do not adapt.

Once prevalent in Montreal, the littlest falcon's downfall is a bellwether for hard times. 鈥淭he story of the kestrel is happening to other bird species.鈥�

Throughout the 1900s, North America鈥檚 littlest falcon was also described as the continent鈥檚 most common and widespread. Small but fierce and marked with bright plumage rare in the raptor world, the American kestrel could be seen throughout the continent, diving and swooping in fallow fields or under the stadium lights at baseball games, hunting for plump moths or small mice.

Wild birds that are more clever than others at foraging for food 听have different levels of a neurotransmitter receptor that has been linked with intelligence in humans, according to a study led by 香蕉视频 researchers. 听The findings could provide insight into the evolutionary mechanisms affecting cognitive traits in a range of animals.

The study, published in Science Advances, was conducted by McGill biologists Jean-Nicolas Audet and Louis Lefebvre, in collaboration with researchers from Duke and Harvard universities.

Barbados birds