Navigation Links
Bobbing birds do it for a reason

Pronounced head-bobbing behavior during walking is a characteristic of diverse species of birds, but how this behavior benefits the birds and under what circumstances it proves useful have remained uncertain. Researchers this week report findings that strongly suggest that for some birds head bobbing is critical for the stabilization of their visual world, despite the motion of their bodies, and thereby enables the accurate detection of objects such as food items.

The motion associated with the head-bobbing behavior consists of alternate phases of holding the head still and rapidly thrusting it forward during each step. This behavior, found in birds but in no other vertebrates, gives them a vaguely comic appearance but is known to be critical for visual stabilization during body movement. What was not known was whether or not this means of avoiding "motion blur" was essential for high-quality vision in birds; many animals, including humans, stabilize visual fields only transiently, through the use of eye movements alone, and accept quite a lot of so-called "visual flow" when in motion.

In new work addressing this question, Thomas Cronin and Matthew Kinloch at the University of Maryland, Baltimore County, with the collaboration of Glenn Olsen of the Patuxent Wildlife Research Center, observed how foraging whooping cranes control head-bobbing as they search for food in the grass near their feet. The tallest birds in North America--their eyes can be more than 5 feet above the ground--whooping cranes exhibit high-amplitude head movements during locomotion, making the measurement of the speed of the head relatively easy via non-invasive computer-video techniques. The cranes search both for mobile prey (frogs and insects) and for items such as acorns, seeds, and tubers. The research team found that the time devoted to holding the head still decreased with walking speed; at a very slow pace, the head was still most of the time, but when the birds began to ru
'"/>

Source:Cell Press


Page: 1 2

Related biology news :

1. Migratory songbirds have a specialized night-vision brain area
2. The lopsided brain: Attention bias is shared by humans and birds
3. Mother birds increase progesterone to hatch females
4. Overbearing colored light may reveal a second mechanism by which birds interpret magnetic signals
5. Industrial contaminants spread by seabirds in High Arctic, new Canadian study shows
6. Displaced songbirds navigate in the high Arctic
7. Oil spills and climate change double the mortality rate of British seabirds
8. Wild birds help to create human flu vaccine
9. Uniquely human component of language found in gregarious birds
10. Attractive birds more immune against bird flu
11. Not just the birds
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Bobbing birds for reason

(Date:5/5/2015)... May 5, 2015, NXT-ID, Inc. (NASDAQ: NXTD ... on the growing mobile commerce market, reminds investors and media ... Officer, is presenting  at CARTES SECURE CONNEXIONS AMERICA 2015, held ... The three-day conference is organized into a ... in is themed Global Fraud: Where is the Trust ...
(Date:4/27/2015)... Apr. 27, 2015 Profile Solutions, Inc. (OTC: ... security systems is pleased to announce that Dr ... consultant and member of its scientific advisory board. ... as a thought leader in technology-enhanced learning models. He ... and has published studies and books focused on online ...
(Date:4/20/2015)... The announcement comes as demand for fire vault ... Ireland,s foremost records management company, has secured ... impressive track record of clients within the first 12 months, ... sector in Dubai . As a result, ... a further eight staff members at its Irish headquarters. The ...
Breaking Biology News(10 mins):NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 2NXT-ID, Inc.'s CTO, David Tunnell, Presents at CARTES SECURE CONNEXIONS AMERICA 2015 Today in Washington DC. 3Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 2Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 3Profile Solutions Names Medicinal Cannabis, Agriculture and Technology Expert Dr. Gerry Bedore to its Scientific Advisory Board 4Glenbeigh Records Management Wins Contract With Dubai Islamic Bank 2Glenbeigh Records Management Wins Contract With Dubai Islamic Bank 3
... lasers. We use them to print out documents, play CDs ... monitor our bloodstream, and even remove tumors from our bodies. ... Physics IAF in Freiburg have developed the technology for a ... of infrared laser forms the core of an analysis ...
... the sacred beetles of ancient Egypt the scarab beetle group ... of the most vulnerable representatives are contained in the flightless ... A recent study published in the open access journal ... distribution from southern Africa. The two new species ...
... has renewed its prestigious Clinical and Translational Science ... (STSI) in the amount of $29 million over ... in genomics, wireless technology and bioinformatics toward individualizing ... between Scripps Health and The Scripps Research Institute ...
Cached Biology News:Lasers offer an automated way to test drinking water 2Lasers offer an automated way to test drinking water 3NIH awards Scripps Translational Science Institute $29 million grant 2NIH awards Scripps Translational Science Institute $29 million grant 3
(Date:5/26/2015)... California and HILDEN, Germany ... QIAGEN N.V. (NASDAQ: QGEN ; Frankfurt ... of its QIAGEN Clinical Insight ® (QCI™) ... labs to interpret and report on genomic variants ... supported applications for the bioinformatics platform are in ...
(Date:5/26/2015)... 2015 Global Stem Cells Group ... for the company’s first cellular and regenerative medicine symposium ... full day, hands-on stem cell training class Oct. 10. ... Gimenez, M.D., President of Therapeutic Confrontations (CONFTERA) in Barcelona. ... interest in regenerative medicine and recent advances in cellular ...
(Date:5/26/2015)... 2015 Leading Regenerative Veterinary Medicine® ... long-term relationship with Veterinary Growth Partners, a membership ... to provide access to vital services to veterinary ... VGP as a dedicated partner in bringing stem ... Concentrating and using stem cells natural abilities to ...
(Date:5/26/2015)... 2015 /PRNewswire/ - Fluorinov Pharma (Fluorinov), a FACIT portfolio ... Beshar to its Board of Directors.  His appointment ... expertise as Fluorinov accelerates its clinical development activities.  ... is a pleasure to welcome Luke to the Board ... the strategy, financial strength and success of multiple organizations," ...
Breaking Biology Technology:QIAGEN Launches Clinical Bioinformatics Platform for Next-Generation Sequencing 2QIAGEN Launches Clinical Bioinformatics Platform for Next-Generation Sequencing 3QIAGEN Launches Clinical Bioinformatics Platform for Next-Generation Sequencing 4QIAGEN Launches Clinical Bioinformatics Platform for Next-Generation Sequencing 5Stem Cell Training, Inc. Announces First European Symposium on Cellular and Regenerative Medicine 2Stem Cell Training, Inc. Announces First European Symposium on Cellular and Regenerative Medicine 3VetStem Biopharma & Veterinary Growth Partners Join Forces to Increase Member Veterinary Hospital Revenue Through Cutting Edge Medical Offering 2VetStem Biopharma & Veterinary Growth Partners Join Forces to Increase Member Veterinary Hospital Revenue Through Cutting Edge Medical Offering 3Luke M. Beshar Appointed to Fluorinov Pharma Board of Directors 2Luke M. Beshar Appointed to Fluorinov Pharma Board of Directors 3
... 3 Cardiac Science,(Nasdaq: CSCX ) ... rehabilitation, and informatics products, announced the,appointment today ... President and Chief,Operating Officer., (Logo: ... position to build our strategic capabilities at ...
... drug discovery research and high throughput screening applications, global market for ... by 2015. A key driving force is the increasing involvement of ... ... San Jose, CA (PRWEB) November 3, 2008 -- Playing ...
... researchers have synthesized an elusive metal-hydroxide compound in ... way for improved precursor inks that could boost ... to a "bottom-up" production of possibly the first ... nitroso-butylamine as an additive in place of nitrosobenzene. ...
Cached Biology Technology:Cardiac Science Appoints Dave Marver as Chief Operating Officer 2Cardiac Science Appoints Dave Marver as Chief Operating Officer 3Microplate Instrumentation & Supplies Market to Exceed $5.0 Billion by 2015, According to New Report by Global Industry Analysts, Inc 2Microplate Instrumentation & Supplies Market to Exceed $5.0 Billion by 2015, According to New Report by Global Industry Analysts, Inc 3New nanocluster to boost thin films for semiconductors 2
...
... Continuing a tradition of progressive centrifuge design ... series. The Centra-CL3 and Centra-CL3R (refrigerated) general ... laboratory., Quality Control Over Sample Preparation ... lock up to 99 protocols and has ...
PP2B-Abeta (C-20)...
... isoprostanes produced from arachidonic acid during lipid peroxidation. ... rat. 8-iso PGE2 inhibits U-46619 or I-BOP-induced platelet ... µM, respectively. When infused into the renal artery ... mg/kg/min, 8-iso PGE2 decreases the GFR and renal ...
Biology Products: