Navigation Links
Evolution May Keep Birds From Becoming Roadkill
Date:3/18/2013

MONDAY, March 18 (HealthDay News) -- Cliff swallows in Nebraska with shorter wingspans that help them take off more quickly and pivot away from passing cars have a reduced risk of becoming roadkill, a new study reports.

The findings suggest that cities can be hot spots of evolution, said the authors of the study published March 18 in the journal Current Biology.

"Evolution is an ongoing process, and all this -- roads, SUVs and all -- is part of nature or 'the wild.' They exert selection pressures in a way we don't usually think about," Charles Brown, of the University of Tulsa, said in a journal news release.

He and his colleagues have been studying cliff swallows in Nebraska since 1982. The birds build clusters of mud nests on vertical walls under bridges, overpasses and railroad tracks. Their colonies often number in the thousands.

Every year for the last 30 years, the researchers have traveled the same roads to collect swallows that have been killed by vehicles and compared them to swallows that suffered other types of accidental deaths.

The data show a sharp decline in road deaths over the last 30 years, and the drop can't be attributed to declines in the swallow population or in traffic volume. The researchers found that swallows that continue to die on the roads have longer-than-average wingspans.

"Longer-winged swallows sitting on a road probably can't take off as quickly, or gain altitude as quickly, as shorter-winged birds, and thus the former are more likely to collide with an oncoming vehicle," Brown said.

Wingspan may not be the only factor, said the researchers, who noted that swallows can learn from one another. So although there was an association between longer wingspans and road death in the cliff swallows, the study did not prove a cause-and-effect relationship.

The fact that these swallows appear to be evolving to reduce their risk of being hit by vehicles may be good news for other species, such as turtles and snakes, that are frequent roadkill victims, the authors noted in the release.

More information

The Cornell Lab of Ornithology has more about cliff swallows.

-- Robert Preidt

SOURCE: Current Biology, news release, March 18, 2013


'/>"/>
Copyright©2012 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. New Clues to the Evolution of the Human Brain
2. Evolution May Explain Runners High, Study Says
3. Losing money, emotions and evolution
4. A Revolutionary Dietary Paradigm: New Cookbook Features A SOS-free (Salt, Oil, Sugar ) Diet That Delivers the Optimal Food Plan for Renewing Health
5. Vygone Presents a Revolutionary Electro Waveform Device to Help Treat Molluscum Contagiosum Lesions
6. Oxford University Press launches Evolution, Medicine, and Public Health
7. Evolutionary information improves discovery of mutations associated with diseases
8. New Queens spin-in company to revolutionize cancer detection
9. An open platform revolutionizes biomedical-image processing
10. Genes of Africas Khoe-San Peoples Give Clues to Human Evolution
11. Bird tree tells new tale of evolution
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Evolution May Keep Birds From Becoming Roadkill
(Date:6/26/2016)... ... June 26, 2016 , ... Many women are ... with endometriosis. These women need a treatment plan to not only alleviate symptoms ... can help for preservation of fertility and ultimately achieving a pregnancy. The specialists ...
(Date:6/25/2016)... ... , ... First Choice Emergency Room , the largest network of independent ... Director of its new Mesquite-Samuell Farm facility. , “We are pleased to announce ... Dr. James M. Muzzarelli, Executive Medical Director of First Choice Emergency Room. , ...
(Date:6/24/2016)... ... June 24, 2016 , ... A recent article ... people are unfamiliar with. The article goes on to state that individuals are now ... of these less common operations such as calf and cheek reduction. The Los Angeles ...
(Date:6/24/2016)... ... June 24, 2016 , ... Global law firm Greenberg Traurig, P.A. announced that ... chosen by their peers for this recognition are considered among the top 2 percent ... special honors as members of this year’s Legal Elite Hall of Fame: Miami ...
(Date:6/24/2016)... Norcross, Georgia (PRWEB) , ... June 24, 2016 ... ... Year” awards today at the Clinical Decision Making in Emergency Medicine conference in ... who have authored journal articles published in Emergency Medicine Practice and ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... 24, 2016 ... the addition of the " Global Markets for ... This report focuses on ... updated review, including its applications in various applications. The ... which includes three main industries: pharmaceutical and biotechnology, food ...
(Date:6/24/2016)... 2016 Research and Markets has announced ... Diagnostic Tests" report to their offering. ... The World Market for Companion Diagnostics covers ... Market analysis in the report includes the following: ... Diagnostic Kits) by Region (N. America, EU, ROW), 2015-2020 ...
(Date:6/23/2016)... 2016  MedSource announced today that it has ... solution of choice.  This latest decision demonstrates MedSource,s ... their clients by offering a state-of-the-art electronic data ... nowEDC as the EDC platform of choice in ... "nowEDC has long been a preferred EDC platform ...
Breaking Medicine Technology: