Tag: "birds" at biology news
Greater Prairie Chicken Appears On Comeback Trail In Illinois
...ere near andabundant. As pioneers moved west, the birds
were hunted for food. They fell topredators, their...ne researchers reportthat an isolated group of the birds
is making a comeback. The potentialrecovery is the result of an experimental conservation-managemen...
Migratory songbird breeding linked to winter habitat
.... Research on the population dynamics of migratory birds
has been hampered by thedifficulty of tracking individual birds
throughout their annual cycle acrossthousands of miles. By using carbon isotopes as a habitat signa...
Unknown contaminant found in seabird eggs
...surface of the ocean, had higherlevels than diving birds
that feed at lower ocean depths." This would suggest,he believes, that the contaminant exists primarily in the surface layer of theocean. Generally, scientific thinking is that "all organohalogens that accumulate inwildlife are from industrial sourc...
Elementary Students Mapping Virginia Wildlife
...died. Young students record sitings of animals and birds
on each expedition, notingthe exact location and then sending that data to the state so that it can keeptrack of habitat patterns and areas where conservation may be needed. VirginiaTech's Museum of Natural History provided bird specimens to help th...
At Night, Birds May Review The Songs They Learn During The Day
...n learning. Researchers have shown that whileyoung birds
sleep at night, they may be reviewing the songs th...iescent during sleep," says Margoliash,because the birds
don't sing in their sleep. But even when the birds
wereasleep, Margoliash and his students recorded...
Fruit-Fly Mating May Produce A Game Of Evolutionary Leapfrog
...ch occur not just in many insects,but also in some birds
and mammals." Prout's co-authors are Andrew Clark, professor of biology,Pennsylvania State University, and David Begun, assistantprofessor of zoology, University of Texas at Austin....
Fossil Eggshells Hold Clues To Major Animal Extinctions As Reported In Science
...regions with distinct climates. Itappears that the birds
survived through a range of natural environmental changeswith no ill effect before their sudden disappearance. How might humans have caused Genyornis ' extinction? Probably not by hunting, asmany researchers have proposed. The authors conducted carb...
Large Gene Study Questions Cambrian Explosion
...l established by fossil studies--the divergence of birds
and mammals about310 million years ago. "A clock ...yoneagrees on the date when reptilian ancestors of birds
and mammals appearedbecause it is based on well-accepted studies of fossils." Using this date as as...
Swimming Proficiency Of Marine Mammals Ranks Them Among The World's Elite Animal
...that run, swim, andfly, whereas mammals, fish, and birds
show distinct differences. Williams analyzed physiological data from a wide variety of animals, drawing onher own research for some animals, such as dolphins, and on published data forothers. She based her comparisons primarily on calculations of eac...
Rare Fossil Shows Theropod Dinosaurs Are Fast, Dangerous 'Turbocharged' Reptiles
...inition, cold-blooded, and that in all likelihood, birds
are not thedescendants of any known group of dinos...al for theaggressive, extended activity typical of birds
and mammals. "Theropod dinosaurswere fast, dangerous animals," Geist said, "certainly not slow or s...
Rare Fossil Shows Dinosaurs As Fast, Dangerous
...finition, cold blooded, and that in all likelihood birds
are not thedescendants of any known group of dinos...hetype of aggressive, extended activity typical of birds
and mammals. "These theropod dinosaurs were fast, dangerous animals," Geist said,"certainly ...
Alien Species Cost U.S. $123 Billion A Year
...the mongooses are preying on native ground-nesting birds
and on amphibiansand reptiles that could, themselv...on feral cats are believed tokill some 200 million birds
a year. At an estimated $30 a bird, that amountsto $6 billion a year in cat damage. -- Dogs bit...
A Real Smart Asp: Snakes Show Surprising Ability To Learn
...tial learning that rivals thelearning abilities of birds
and rodents," he concluded, "but thecues used by s...n's theory that what holds for snakes, lizards,and birds
may also hold for their evolutionary descendants --humans. If he and his colleagues come to understa...
Coastal Birds "Feel" Their Prey Under The Sand
...esearchers hid little stones in the sand. That the birds
candetect stones is remarkable because stones obvi...t also explainsfor the first time why these wading birds
only forage on wet sand; in drysand, the sensor in their beak does not work. As soon as the tide has...
Gene Study Shows Turtles Are Next Of Kin To Crocodiles And Alligators
...al and fossil studies, which had firmly positioned birds
as the reptilegroup most closely related to crocodiles and alligators, a group known ascrocodilians. The surprising finding will be be published in the February 12, 1999, issue ofthe journal Science by researchers S. Blair Hedges, an associate prof...
L.A.Times Book Prize Finalist: Book On Evolution Of Bird Flight
...ryx lie at the center of a heated debate about how birds
evolved theability to soar above the ground. Scie...n the story are some fundamentalquestions: How do birds
fly? Did birds
evolve flight "ground up" or "treesdown?" Are birds
really just evolved dinosaurs? A...
Whooping Cranes Take Flight
...nute drive to the releasepens where the first four birds
will be processed between 4:45and 6:00 p.m. The re... Laurel,Md., will be released to join their fellow birds
in the marshesnear Okahumpka, Fla. Reporters are invited to attend and cover this event. The captive...
Urban Ecology Study Watches Birds On The Web
...e," said Hostetler. "Through a long-term study on birds
in thePhoenix metropolitan area, we hope to obtain...one interested inseeing interesting native Arizona birds
like the Curve-billed Thrasher, theBlue-grey Gnatcatcher, Abert's Towhee, the Brown-crested Flycatch...
USGS Finds That Mysterious Arkansas Bald Eagle Disease Has Spread To Ducks In Eastern States
...described the lesion, explained that "In affected birds
the diseaseappears as open spaces in the white mat... said that the only consistent finding in affected birds
is themicroscopic change in the nervous system. Despite extensive testing by USGS,SCWDS, and others,...
In Animal Groups, Scientists See Patterns That Could Predict The Future
...flocks got smaller, social interactions betweenthe birds
broke down. Hundreds or even thousands of birds
were simply too few toform the flock sizes needed for the species to survive, she says. Documenting ...
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