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Tag: "birds" at biology news

Industrial contaminants spread by seabirds in High Arctic, new Canadian study shows

...Cape Vera colony of about 10,000 breeding pairs of birds called northern fulmars. The fulmars nest on the high cliffs, which are ringed by a series of freshwater ponds at their base. Although environmental monitoring in High Arctic locations is often very difficult due to logistical difficulties, lake sedi...

What comes first…the chicken, the egg, or the bad attitude?

... that challenges basic assumptions about how these birds function," said Dr. Rob Renema, a researcher in th...ma said. Discovery of the exceptional "super-mom" birds that don't fit the textbook norm has opened new doors in the research program. "If the offspring of ...

Virologist finds contagious equine flu in dogs

...virus, like the virulent H5N1 that has jumped from birds to humans over the last few years. A highly sensitive test -- called a PCR (polymerase chain reaction) that amplifies and detects small amounts of DNA or RNA in a blood or tissue sample -- ruled out avian flu strains H5 and H7. The isolate was then...

Overbearing colored light may reveal a second mechanism by which birds interpret magnetic signals

...the influence of light on the ability of migratory birds to orient to magnetic signals, researchers have fo...y be more complex than previously thought and that birds may be able to interpret magnetic signals by more than one mechanism. The work is reported in Curren...

Looks matter to female barn swallows

...oats to their bellies, and this color varies among birds from very pale red-brown to a dark rusty-red. Like...vious studies have investigated mating patterns in birds and other animals, this is the first study of its kind to meticulously rule out biases such as age, ...

Chickadees can help humans get their bearings

...Alberta researchers were surprised to discover the birds contradicting prior research that showed how anima...guiding themselves to food in lab experiments, the birds consistently ignored the concept when a prominent landmark, in this case a blue wall, was present. ...

Agilent Technologies introduces high-capacity human protein removal system for proteomics research

... the group that includes crocodiles, dinosaurs and birds - called the aetosaurs. Irmis, Parker and Nesbitt are continuing their look at the alleged ornithischians of the Late Triassic to ascertain the quality of the fossil record and what it says about early dinosaur evolution. ...

Revueltosaurus skeleton unearthed at Petrified Forest upsets dinosaur tale

... the group that includes crocodiles, dinosaurs and birds - called the aetosaurs. Irmis, Parker and Nesbitt are continuing their look at the alleged ornithischians of the Late Triassic to ascertain the quality of the fossil record and what it says about early dinosaur evolution. ...

What the eye doesn't see

The first experimental evidence that birds can be deceived by camouflage in the same way that...l said: "The rate at which mealworms were eaten by birds gives a measure of how effective each combination was at preventing detection by a predator. Combina...

Mother birds increase progesterone to hatch females

...duces during the first meiosis is the mechanism in birds that manipulates the sex ratio of offspring," says Adkins-Regan. "Researchers think that birds such as the Seychelles warbler may bias the sex of their offspring when, for example, their territor...

Bobbing birds do it for a reason

...ecies of birds, but how this behavior benefits the birds and under what circumstances it proves useful have...eport findings that strongly suggest that for some birds head bobbing is critical for the stabilization of their visual world, despite the motion of their bo...

The lopsided brain: Attention bias is shared by humans and birds

...tention in the two hemispheres; the new finding in birds offers some insight into how and why this might be...eet of paper placed before them. The finding that birds also exhibit spatial pseudoneglect is somewhat surprising, given that birds lack a corpus collosum, ...

Migratory songbirds have a specialized night-vision brain area

... songbirds. They believe the area might enable the birds to navigate by the stars, and to visually detect t... over thousands of miles at night, night-migratory birds need to see where they fly, as well as navigate by stars and the earth's magnetic field. Surprisingl...

One gene links newborn neurons with those that die in diseases such as Alzheimer's

...ival of neurons, these levels should increase when birds are singing and when more new neurons thus have a ...rons, but not in nonreplaceable ones, increased in birds that were singing. "These findings suggest that rising levels of UCHL1 may be associated with a red...

Biochemists report discovery of structure of major piece of telomerase; implications for cancer

...t since it is conserved from humans to marsupials, birds and marine animals," Theimer said. Feigon's laboratory studies the three-dimensional structures of DNA and RNA, and how proteins and DNA and RNA recognize one another to switch genes on and off in cells. Her laboratory has worked on telomeres and te...

The evolutionary triumph of flower power

... by humans that nature's pollinators ?the bugs and birds ?no longer find them attractive. So the job of propagating the species depends mainly on us. A recent article in the journal "Evolutionary Psychology" by McGuire; Jeannette Haviland-Jones, a professor of psychology at Rutgers, The State University o...

Birds brains reveal source of songs

...or the first time how a particular brain region in birds serves as the source of vocal creativity. "It's a...t, the poorly understood basal ganglia circuit, so birds may have something to teach us about our own brains and what we learn may eventually apply to human ...

Vampire bats keep out of trouble by running

...nvironment. In contrast, Riskin says, the bats and birds of New Zealand had no predators to keep them flying. Many of the birds became flightless walkers, and the bats walk more than others, as flight is energetically very expen...

South America's vast pantanal wetland may become next everglades, UNU experts warn

... wintering grounds for a large number of migratory birds that summer in North America. According to an ana...hich destroy flood-adapted trees, in which aquatic birds nest, while killing swamp deer and other animals. (The Pantanal's other fauna includes giant anteate...

Bird Brains Show How Trial and Error May Contribute to Learning

...ter sophisticated motor skills, such as singing in birds or speech and sports in humans. "It means this pa...ariations of solo song. Finally, they showed that birds with damage to that region of the brain lost their improvisational ability. In birds without a funct...

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