Tag: "flightless" at biology news

Beset By Human Competition, Penguins Must Take Marathon Food Trips To Avoid Starvation, A Researcher Finds

...shore as previously thought. Instead, these small, flightless birds are capable of swimming hundreds of miles, journeys that take three weeks or more, to find food for themselves and their chicks. "The major cause of chick mortality is starvation, often the result of a parent failing to return from a long fora...

Increasing Frequency Of El Nino Takes Toll On Northern Hemisphere's Only Penguins

...: dead marine iguanas and sealions, undernourished flightless cormorants and a generally emaciated penguinpopula...nsthey're just more vulnerable to extinction." The flightless birds are among the smallest penguins, typically standing 20 to24 inches high and weighing 4 to 5 po...

International Research Team Announces Discovery Of Two Species Of Feathered Dinosaurs

...the dinosaur/bird transition. Thiseight-foot-long flightless creature was capable of moving its arms up and downin a manner that was a precursor to the flapping movement a bird uses in flightthat seems to represent a critical step towards powered flight. Discoveries made in the 1990s by Dr. Norell and the Amer...

French Researchers Breed Flightless Ladybirds As Pest-Killers

...insects, mites andmealybugs. In tests, the flightless ladybirds have already been successful inkeeping p...beingable to feed high in the trees. Whether their flightless relatives will be ableto do this is unclear. "Certainly this is an interesting advance," say...

Jurassic Beetle: CSIRO Entomologist Discovers Living Fossil

... the insects fell. This trough sometimes catches flightless animals too, when they walk into it." That was how the two specimens of the new Omma species came to stumble into the entomological record books. "We know next to nothing about them, because they are so rare," Dr Lawrence says. "There are ...

Study Associates Asteroid Or Comet Impact With Extinctions In Argentina

...f 35different types of ancient mammals and a flightless bird 3.3 million years ago. Theimpact may ha... sloths, hoofed groups of related mammals and a flightless carnivorousbird. Other fauna later appeared in their place. By using a laser fusion te...

Fossil Eggshells Hold Clues To Major Animal Extinctions As Reported In Science

... researchers have usedthe eggshells of an enormous flightless bird to show that humans were probablyresponsible ... theextinction of Genyornis newtoni , a ponderous flightless bird with thick, shortlegs that weighed around 200 pounds--twice as much as the modern day emu. They...

Emu Meat Not A Popular Choice Among Consumers, Study Shows

...buds a bit before trying the low-fat meat of emu,a flightless bird native to Australia. Emu is a healthy...he ostrich, the emu belongsto the ratite family of flightless birds. Raw emu has a dark cherry color andresembles beef when cooked. Retail cuts of emu include ste...

Scientists Use Fossilized Emu Eggshells To Discern Changes In Vegetation, Provide Additional Evidence Of Human Impact On Australian Landscape

...osition of fossilizedeggshells laid by emus, large flightless birds that are still found today inAustralia. The ...am speculated that many browsers, such asthe large flightless bird Genyornis newtoni that was the focus of theirresearch, became extinct after human-set fires acr...

Fossilized Emu Eggshells Give Clues To 65,000 Years Of Vegetation And Climate Changes In Australia

The swift-running, flightless Australian emu is helping scientists piece togethe...tinction for a least one Australian megafauna, the flightless bird Genyornis newtoni at 50,000 years ago (Science, vol. 283, no. 5399, p. 182). Measurements since...

Fossil mayflies can be used to 'weigh' ancient atmospheres

... ago among flying reptiles (pterosaurs) and birds' flightless dinosaur relatives? Cisne said he hopes that further study of mayflies and other fossil insects will provide more definitive answers to geologists' questions. "Mayflies are particularly good subjects because their flight mechanism is relatively simpl...

Ancient fossil shows earliest feathers, may end argument about birds' origin

...he observed. Barbs on either side of the quills of flightless birds are nearly symmetrical. "The most bird-lik...have been called feathered dinosaurs were probably flightless birds."...

Ancient feathered animal challenges dinosaur-bird link

...have been called feathered dinosaurs were probably flightless birds." On the other hand, Ruben said, Longisquama would have lived in the right time, and had the right physical structure, to have been the distant evolutionary ancestor of birds. "Feathers are a very complicated structure," Ruben said. "The od...

Cold water off Brazil might be causing Argentine penguin nest failures

...f people keeping them as pets and even placing the flightless birds inside refrigerators to keep them more comfortable, a mistaken notion that is likely to cause hypothermia. In addition, many more dead penguins have washed up on Brazilian beaches. Boersma speculates that these birds might have miscalculated wh...

Changes in Australian ecosystems tied to arrival of exotic animals

...ding to a new study. The eggshells of the large, flightless bird are unique in that they can be dated by traditional radiocarbon methods and by a process known as amino acid racemization, said University of Colorado at Boulder Professor Gifford Miller. Racemization involves studying mirror-like changes in am...

First dinosaur found with its body covering intact; displays primitive feathers from head to toe

... that feathers developed before flight. In small, flightless dinosaurs like this one, feathers may have evolved as an essential piece of equipment for staying warm. Modern birds are warm-blooded and their feathers play an integral role in keeping them warm, so a reasonable idea is that non-avian dinosaurs d...

DNA shows genetic variability of the nene lost more than 500 years ago, not during the 20th century

...hey survive and recover when many other species of flightless Hawaiian birds disappeared altogether before recorded history? Research reported in today's edition of the journal Science suggests that a boom in the human population between 900 and 350 years ago may have impacted and reduced the population size of...

World's largest forest birds may produce world's deepest bird calls

... the study says that three species of cassowaries flightless birds that can weigh as much as 125 pounds produce a "booming" call so low that humans may not be able to detect much of the sound. The researchers draw similarities between the birds' calls and the rumbling elephants make to communicate. "When cl...

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