Go Back   EcoModder Forum > Off-Topic > The Lounge
Register Now
 Register Now
 


Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 03-28-2013, 12:48 PM   #1 (permalink)
EcoModder
 
Join Date: Jul 2008
Location: North Central Alabama
Posts: 572

Big Salsa - '04 Toyota Sienna LE

Silver - '10 Toyota Prius III
Thanks: 110
Thanked 123 Times in 71 Posts
Cliff Swallows Evolve to Avoid Traffic

Ok, it's not really "ecomodder discussion", but I thought a lot of people would find it interesting. It seemed like posting it in "Off-Topic Tech" fit best, but I had considered Aero since it's about aerodynamic/turning radius improvements for birds with shorter wings. At any rate, enjoy!


Quote:
Cliff swallows that build nests that dangle precariously from highway overpasses have a lower chance of becoming roadkill than in years past thanks to a shorter wingspan that lets them dodge oncoming traffic. Thatís the conclusion of a new study based on 3 decades of data collected on one population of the birds...

When the researchers looked back at the numbers of swallows collected as roadkill each year, they found that the count had steadily declined from 20 birds a season in 1984 and 1985 to less than 5 per season for each of the past 5 years. During that same time, the number of nests and birds had more than doubled, and the amount of traffic in the area had remained steady.

The birds that were being killed, further analysis revealed, werenít representative of the rest of the population. On average, they had longer wings. In 2012, for example, the average cliff swallow in the population had a 106-millimeter wingspan, whereas the average swallow killed on the road had a 112-millimeter wingspan.
Cliff Swallows Evolve to Avoid Traffic | Wired Science | Wired.com

Birds diving for moths in intersections : News : FOX21News.com

__________________
  Reply With Quote
The Following 2 Users Say Thank You to wyatt For This Useful Post:
Arragonis (03-28-2013), Piwoslaw (03-29-2013)
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 03-28-2013, 01:28 PM   #2 (permalink)
Lots of Questions
 
Join Date: Jan 2013
Location: San Jose
Posts: 661

Motor-Rolla - '01 Toyota Corolla LE
Team Toyota
90 day: 28.3 mpg (US)

Gaia - '99 Toyota 4Runner SR5 Highlander
90 day: 19.78 mpg (US)

Gaia - Round 2 - '99 Toyota 4runner SR5 Highlander
90 day: 18.22 mpg (US)
Thanks: 340
Thanked 100 Times in 78 Posts
Coming from an Environmental Studies major, that is pretty cool (as in interesting)! Whoever says humans don't have an impact on the natural environment needs to come back to reality, maybe they should read this!

Great find!
__________________
Don't forget to like our Facebook page!




Best EM Quotes:
Quote:
Originally Posted by aerohead View Post
It has been said, that if you peel the duct tape back on Earth's equator, you'll find that the two hemispheres are held together with J B Weld.
Quote:
Originally Posted by Dan9 View Post
subscribed with a soda.
Quote:
Originally Posted by aerohead View Post
If you're burning,and someone throws gasoline on you,there will be a localized cooling effect, but you're still on fire.
  Reply With Quote
Old 03-28-2013, 05:16 PM   #3 (permalink)
The PRC.
 
Join Date: Oct 2009
Location: Elsewhere.
Posts: 5,304
Thanks: 285
Thanked 536 Times in 384 Posts
Excellent article

__________________
[I]So long and thanks for all the fish.[/I]
  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2023, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com