Navigation Links
Birds reduce their heating bills in cold climates
Date:6/23/2010

>Although it's possible that large bills have evolved to help shed heat loads and prevent overheating in hot climates, we think it's more likely that cold temperatures impose a constraint on the size of bird beaks," Dr Tattersall says.

"It simply might be too much of a liability to carry around a big radiator of heat energy in a cold environment."

The research validates a 133-year-old ecological theory called Allen's rule, which predicts that animal appendages like limbs, ears, and tails are smaller in cold climates in order to minimize heat loss.

Dr Symonds says Allen's rule has never been tested with this large a group of animals and was more anecdotal.

"This is the first rigorous study of its kind to test this theory and to show that bird bills have evolved in this manner."


'/>"/>

Contact: Rebecca Scott
rebeccas@unimelb.edu.au
61-383-440-181
University of Melbourne
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Savanna habitat drives birds, and perhaps others, to cooperative breeding
2. Uncertainty drives the evolution of cooperative breeding in birds
3. A dog in the hand scares birds in the bush
4. City birds better than rural species in coping with human disruption
5. Do migratory birds see the magnetic field?
6. LSU professor studies army-ant-following birds
7. Time-sharing tropical birds key to evolutionary mystery
8. Lavishly illustrated guide to Perus birds describes 1,800 species
9. Threatened birds may be rarer than geographic range maps suggest
10. Siberian jays can communicate about behavior of birds of prey
11. High degree of resistance to antibiotics in Arctic birds
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Birds reduce their heating bills in cold climates
(Date:10/17/2014)... Why do male ... reproduce? And why are there two sexes anyway? These and ... the research journal Molecular Human Reproduction published today ... University Bielefeld has compiled this special issue on sperm competition. ... copulate with several males in quick succession – chimpanzees are ...
(Date:10/17/2014)... . To date, ... overdoses, doctors are often limited to supportive therapy such as ... combination of drugs involved. So what can be done if ... ETH professor Jean-Christophe Leroux from the Institute of Pharmaceutical Sciences ... question. "The task was to develop an agent that could ...
(Date:10/16/2014)... William and Mary,s Virginia Institute of Marine Science ... Environmental Protection Agency to identify the streams and ... develop tools to help local governments and citizens ... critically on a dataset of tidal-marsh observations first ... with this historical baseline can today,s researchers accurately ...
Breaking Biology News(10 mins):Sperm wars 2Emergency aid for overdoses 2Emergency aid for overdoses 3EPA grant will help localities conserve headwater wetlands 2EPA grant will help localities conserve headwater wetlands 3
... bacterial community living under extreme conditions almost two miles ... mine. It is the first microbial community demonstrated to ... and one of the few ecosystems found on Earth ... in any way. The discovery, appearing in the October ...
... An examination of 4 cases of botulism following cosmetic ... a highly concentrated, unlicensed preparation that resulted in toxin ... dose, according to a report in the November 22/29 ... paralytic illness caused by the toxins of the spore-forming ...
... further than the air around you. It could be ... to a first-of-its-kind census of airborne microbes recently conducted ... Berkeley National Laboratory (Berkeley Lab). , The team ... in air samples taken from the Texas cities of ...
Cached Biology News:Otherworldly bacteria discovered two miles down 2Highly concentrated botulinum preparation for cosmetic injections can result in severe illness 2Highly concentrated botulinum preparation for cosmetic injections can result in severe illness 3Study finds the air rich with bacteria 2Study finds the air rich with bacteria 3Study finds the air rich with bacteria 4
(Date:10/20/2014)... , Oct. 20, 2014 Asterias ... the Company has signed a Notice of Grant ... Medicine (CIRM), effective October 1, 2014.  The NGA ... payments and the release of additional grant funds ... grant award for clinical development of Asterias, product, ...
(Date:10/20/2014)... Oct. 20, 2014 PureTech , a ... big healthcare problems, announced today the closing of ... participation from Invesco Perpetual, a $120 Billion group ... drive PureTech,s existing pipeline forward and to advance ... the scientific creativity to really go for the ...
(Date:10/19/2014)... The Latin American hardware encryption display ... America with analysis and forecast of revenue. This market ... expected to reach $2,366.8 million by 2018, at a ... through the TOC of the Latin American hardware encryption ... analysis provided. It also provides a glimpse of the ...
(Date:10/19/2014)... October 19, 2014 The Asian Automatic ... Asian with analysis and forecast of revenue. The Automatic ... to around $463.9 million by 2018, at a developing ... through the TOC of the Asian Automatic patient billing ... provided. This also provides a glimpse of the segmentation ...
Breaking Biology Technology:Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 2Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 3Asterias Biotherapeutics Announces Notice of Grant Award with CIRM for Phase 1/2a Clinical Trial of AST-OPC1 in Complete Cervical Spinal Cord Injury 4PureTech Announces Expansion with Oversubscribed $55M Funding Round 2PureTech Announces Expansion with Oversubscribed $55M Funding Round 3PureTech Announces Expansion with Oversubscribed $55M Funding Round 4PureTech Announces Expansion with Oversubscribed $55M Funding Round 5PureTech Announces Expansion with Oversubscribed $55M Funding Round 6The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 2The Latin American hardware encryption display market is expected to reach $2,366.8 million by 2018 - New Report by MicroMarket Monitor 3The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 2The Asian Automatic patient billing market is estimated to grow to around $463.9 million by 2018 - New Report by MicroMarket Monitor 3
... , , , VILNIUS, Lithuania, ... a provider of high-precision biometric identification technologies, has released new versions of the ... identification. The latest SDK versions, VeriFi n ger 6.1 ... VeriE y e 2.1 and MegaM ...
... Aug. 24 In response to the quickly emerging need ... for their members or constituents, tech startup Engageon LLC officially ... The first launch was developed for the National Lipid Association ... . lipid.org . Typically, most organizations have a ...
... NORWOOD, Mass., Aug. 24 Advanced Instruments has introduced ... business experience when purchasing osmometers, cryoscopes, and microbiological laboratory instruments. ... i es.com , was developed from the perspective ... and application information, scientific materials, and technical support. , ...
Cached Biology Technology:New Product Versions from Neurotechnology Enable Tri-modal Biometrics 2New Product Versions from Neurotechnology Enable Tri-modal Biometrics 3Engageon Releases First Peer-to-Peer Medical Association Social Network 2Advanced Instruments Introduces Next-Generation Web Site 2