HOME >> BIOLOGY >> NEWS
Whooping cranes stabilize vision to find food

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 r
'"/>

Contact: Heidi Hardman
hhardman@cell.com
1-617-397-2879
Cell Press
11-Apr-2005


Page: 1 2

Related biology news :

1. Whooping cough vaccine not just for kids anymore
2. Whooping crane shot in Kansas dies
3. Ingredient in Big Macs and sodas can stabilize
4. Two drugs may stabilize plaques in atherosclerosis
5. Increasing norepinephrine stabilizes breathing patterns in a mouse model of Rett Syndrome
6. A unique arrangement for egg cell division
7. Research shows NPD1 protects a key component of vision
8. Researchers find pathway that controls cell size and division
9. Major breakthrough in understanding how HIV interferes with infected cell division
10. Color vision drove primates to develop red skin and hair, study finds
11. UF researchers awaken vision cells in blind mice

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/5/2020)... (PRWEB) , ... June 04, 2020 , ... Murrieta ... filed a new patent application for simplified sample preparation for Next Generation Genomic ... will greatly reduce cost, time, and complexity of sample preparation. , “I have been ...
(Date:5/30/2020)... (PRWEB) , ... May 29, 2020 , ... ... of digital transformation for enterprises globally, has collaborated with EchoNous Inc. to develop ... It can measure systolic heart function, which has been clinically tested versus ...
(Date:5/28/2020)... and FORT WORTH, Texas (PRWEB) , ... May ... ... stage biopharmaceutical company, announced today that interim results from their 1801 Phase 1/2 ... of Clinical Oncology (ASCO) Annual Meeting which will take place virtually on May ...
Breaking Biology News(10 mins):
(Date:6/11/2020)... ... , ... Reducing carbon emissions has been and will continue to be a ... dips, ways to reduce CO2 is something we can’t avoid. , To protect ... being produced today are created from recycled cooking oil or crops. Unfortunately, these sources ...
(Date:5/30/2020)... ... May 29, 2020 , ... Medrio, ... and animal health markets, has enabled Cytovale, Inc., a medical technology company dedicated ... learning, to achieve their first patient in (FPI) in just seven days. The ...
(Date:5/28/2020)... ... May 28, 2020 , ... The Security Industry Association (SIA) and ... winners of the Women in Biometrics Awards – a globally recognized program ... Update and the SIA Women in Security Forum . The honorees will ...
(Date:5/21/2020)... ... 19, 2020 , ... Experienced periodontist in Eden Prairie, MN, Dr. Andres Sanchez, ... through PIEZOSURGERY® technology. PIEZOSURGERY uses ultrasonic vibrations to gently cut bone in ... for dental implants, especially when the implants need to be placed in a sensitive ...
Breaking Biology Technology:
Cached News: