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:11/12/2014)... Fla. , Nov. 12, 2014 Crossmatch™, ... today that its U.are.U ® fingerprint readers have ... chain in Central Mexico . The ... 2014 to eliminate payroll issues caused by employees clocking ... installing the U.are.U fingerprint readers, Montparnasse relied on paper ...
(Date:11/7/2014)... 2014  In conjunction with the Glendale ... Community Foundation of the Verdugos has announced the " ... a $250,000 initiative to keep the Verdugo Regional Crime Lab ... six months of existence, the Lab has processed more than ... law enforcement. "Because our number one priority is ...
(Date:11/6/2014)... is an asset for a predator. Except when that predator ... tiger beetle, relative to its size, is the fastest creature ... body lengths per second (at about five miles per hour). ... take the sprinting gold from the tiger beetle, a person ... The tiger beetle has a problem. At peak speeds, everything ...
Breaking Biology News(10 mins):Montparnasse Pasteleria Achieves Time and Attendance Transparency with Crossmatch U.are.U Fingerprint Readers 2Community Foundation Of The Verdugos Unveils Campaign To Fund Glendale-Burbank DNA Justice Project 2The tiger beetle: Too fast to see 2
... A new research paper by a team of researchers ... (ECI) demonstrates how two cutting-edge technologies can provide a ... for invasive species before they get into our country ... cause ecological and economic damage worldwide, including the loss ...
... This press release is available in French . ... JUVS ) is a new quarterly, electronic-only publication that is now ... Fall of 2013. Developed in partnership with Unmanned Systems Canada (USC-STC) ... is an exciting addition to the NRC Research Press journal ...
... a negative impact on bees, ability to learn following exposure ... researchers found that the pesticides, used in the research at ... the learning circuits in the bee,s brain. They also found ... or completely forgot important associations between floral scent and food ...
Cached Biology News:Notre Dame researchers are using new technologies to combat invasive species 2NRC Research Press adds a new title to collection of scientific and technical journals 2Pesticide combination affects bees' ability to learn 2
(Date:11/21/2014)... Los Angeles, CA (PRWEB) November 21, 2014 ... is it that makes Albert Einstein so instantly recognizable? ... South African-born physicist, mathematician, astronomer and author Hilton Ratcliffe ... that they have nothing at all to do with ... ( Muse Harbor Publishing , November 21, 2014), Ratcliffe ...
(Date:11/21/2014)... DIEGO , Nov. 20, 2014  Cytori Therapeutics (NASDAQ: ... Marc Hedrick , M.D. will present live at VirtualInvestorConferences.com on ... 2014 TIME:    11:15 am PT / 2:15 pm ... URL into your browser,s address bar: http://bit.ly/1B2KGaL ... and receive event updates. This will be ...
(Date:11/18/2014)... pH measurement and control is vital in a ... food and beverage industries. But what exactly is pH, ... sensors work? METTLER TOLEDO has produced a guide to ... these questions and more. , METTLER TOLEDO provides a ... The actual sensor, the pH electrode, is therefore the ...
(Date:11/18/2014)... 2014 2014 Deep Research ... professional and in-depth report on Polytetrahydrofuran (PTMEG) ... including its definition, characterization, application, and industry ... exploration covers the worldwide business investigation, including ... covering macroeconomic environment & financial circumstance examination. ...
Breaking Biology Technology:“Stephen Hawking Smoked My Socks” Sparks Controversy in Science World 2“Stephen Hawking Smoked My Socks” Sparks Controversy in Science World 3“Stephen Hawking Smoked My Socks” Sparks Controversy in Science World 4Cytori Therapeutics to Provide Corporate Update and Investor Presentation on December 4 through a Live, Interactive Webcast 2Cytori Therapeutics to Provide Corporate Update and Investor Presentation on December 4 through a Live, Interactive Webcast 3Cytori Therapeutics to Provide Corporate Update and Investor Presentation on December 4 through a Live, Interactive Webcast 4pH Guide from METTLER TOLEDO Explains Measurement, Theory and Practice of pH Applications 2PTMEG Market: 2019 Global Polytetrahydrofuran Industry Development Trends & Analysis Now at DeepResearchReports.com 2PTMEG Market: 2019 Global Polytetrahydrofuran Industry Development Trends & Analysis Now at DeepResearchReports.com 3
... that could be used in novel security devices to ... sensors, according to research published tomorrow (8 April) in ... which are based on a fundamental science discovery in ... to instantly detect the presence of particular molecules, for ...
... Bulletin Board: TBIO), a leading global biotechnology company, announces ... Dana-Farber Cancer Institute, Boston, MA with regard to a ... standard PCR technology enriches mutations in samples where normal ... Mike Makrigiorgos who has demonstrated its effectiveness in enriching ...
... Calif., April 7 Voler Systems ( http://www.volersystems.com ) ... Program" which provides full-service consulting from concept and design ... economic conditions are not deterring Voler from investing in ... needs and reducing time-to-market for new medical devices. During ...
Cached Biology Technology:New security and medical sensor devices made possible by metallic nanostructures 2Transgenomic Completes Licensing Option With Dana-Farber Cancer Institute on Cold-PCR for Enrichment of DNA Mutations 2Transgenomic Completes Licensing Option With Dana-Farber Cancer Institute on Cold-PCR for Enrichment of DNA Mutations 3Transgenomic Completes Licensing Option With Dana-Farber Cancer Institute on Cold-PCR for Enrichment of DNA Mutations 4Voler Systems Continues Investments and Expands Services 2
Recorder, 6", 7 Day, 1 Pen, 0 to 100°C, 220V, 50/60 Hz, for 4520, Customer Installed...
... STAR3000 HISTAR detection systems provide linking ... used with species specific primary antibodies ... specimens. Visualisation is accomplished using an ... novel polymer labelling technology. Secondary antibodies ...
Taq DNA Polymerase (T. aquaticus), 250 units. For PCR and other procedures requiring DNA polymerase activity at elevated temperatures. Category: Nucleotides & Enzymes & Biochemicals, Modifying Enzyme...
... AmpliTaq DNA Polymerase is ... the PCR process, a testimony to its ... activity profile makes it ideal for PCR ... to guarantee reproducible results. ,, AmpliTaq ...
Biology Products: