Navigation Links
Early environment may be key to determining bird migration location
Date:2/18/2008

h mangrove. The birds from the lower rent district leave later for breeding grounds, must migrate farther north, and when they return to Jamaica, the mangrove is occupied and they are, once again, scrabbling in the scrub.

The Cycle

The cycle begins for the young redstart when it leaves its northern birthplace and migrates south for its first winter. Studds team measured a hydrogen isotope called deuterium, found in the fledglings tail feathers, an indicator of where the bird was hatched and, in subsequent summers, where it breeds. Once the isotope in the feathers, it doesnt change, Studds says.

The isotope measurement showed that the birds that had the good fortune to spend their first winter in the mangrove stayed in the good life, while the birds that had wintered in the dry area usually had a harder life year round.

The birds in the lush mangrove have access to more insects, which helps them maintain their weight, says Studds. This helps them to leave sooner on spring migration and arrive sooner in the more southern breeding areas, where spring is just beginning,

The birds in the dry area, however, need about another seven days to bulk up, a long time, says Studds. The later start means that by the time they head north, the southern breeding habitat is already taken and the birds have to keep flying, some as far north as Canada, to find the right spring conditions for breeding.

Where a redstart spends its first winter also seems to be determined, in part, by its ability hold its territory. About seventy percent of the birds in the mangrove are males, Studds says. In the harsh habitat, they were mostly females and young males.

Climate Change and the Redstart

While these redstarts appear to be thriving today, the research team says their findings point to the need to consider conservation measures in the winter habitat.

The models predict increasing drought in the Caribbean, says Studds. Rain i
'/>"/>

Contact: Ellen Ternes
eternes@umd.edu
301-405-4627
University of Maryland
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. 60 second test could help early diagnosis of common brain diseases
2. Restless legs syndrome affects nearly 2 percent of US/UK children
3. Bleeding, not inflammation, is major cause of early lung infection death
4. Pig study sheds new light on the colonisation of Europe by early farmers
5. Color contrast is seen by the brain early doors
6. Extra gene copies were enough to make early humans mouths water
7. Was ability to run early mans Achilles heel?
8. New technique can be breakthrough for early cancer diagnosis
9. Yam bean a nearly forgotten crop
10. NIH awards nearly $23M to University of Chicago for translational research
11. Yam bean a nearly forgotten crop
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/12/2015)... , March 12, 2015 WHEN:Tuesday, March 17, ... here: http://bit.ly/1G7Os0L . SPEAKERS: , Frost & ... - http://photos.prnewswire.com/prnh/20150311/181111 Biometric companies ... compete in several different markets and industries. This ... witnessing an uptrend. Join Frost ...
(Date:3/10/2015)... , March 10, 2015  Continuing its 167-year history ... Hammacher Schlemmer introduces The Eye Scanning Password Authenticator ... granting access to secure websites or sensitive data. ... travelers at international borders, the device has a small ... points of the iris, converting them into an encrypted ...
(Date:3/10/2015)...  NXT-ID, Inc. (NASDAQ: NXTD ... authentication company focused on the growing mobile commerce ... been named the "Number One Best Tech Gift ... Modern ( http://www.rethinkmodern.com/ ) is a web magazine focused ... that have a unique function or design.  ...
Breaking Biology News(10 mins):Biometrics Key to Future Growth in Healthcare, Retail and Financial Markets 2Biometrics Key to Future Growth in Healthcare, Retail and Financial Markets 3Hammacher Schlemmer Introduces The Eye Scanning Password Authenticator 2NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 2NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 3NXT-ID's Wocket Smart Wallet Named Number One Best Tech Gift for 2015 by Rethink Modern 4
... potential new treatment for alcoholism called nalmefene is effective ... individuals, says a new study published this week in ... regarded as the primary treatment goal for alcohol dependence, ... for relapse prevention. However, relapse rates remain high and ...
... ( Journal of Visualized Experiments ) will publish a ... phone camera can capture images from a fluorescent microscope and flow ... to easily run tests such as checking for contaminated water and ... article electrical and bio engineers from the University of California Los ...
... biodiversity observation network could be established with modest funding ... in the May 2013 issue of BioScience . ... in scientists, understanding of the global distribution of marine ... pollution, habitat destruction, and overfishing. The network would help ...
Cached Biology News:A new treatment option for alcohol dependence: Reduced consumption rather than abstinence 2Cell phone camera photographs microscopic cell samples 2
(Date:3/25/2015)... 2015 /PRNewswire/ - SQI Diagnostics Inc. ("SQI" or the "Company") ... of recent discussions with certain shareholders representing approximately 45% ... after dealing with certain matters including the appointment of ... on March 26, 2015 (the "Meeting") it intends to ... will take place when the Meeting reconvenes. The Meeting ...
(Date:3/25/2015)... NEW YORK , March 25, 2015 /PRNewswire/ ... has commenced Factual Stock Report coverage on ... Bioceuticals (OTCQX: ATTBF; CSE: ATT): is a specialty ... subsidiaries of cultivating, licensing and marketing proprietary ingredients, ... medicinal markets in North America ...
(Date:3/25/2015)... CAMBRIDGE, Mass. and REYKJAVIK, ... which provides comprehensive capabilities for using the genome to create ... their publication of the largest studies of whole-genome data yet ... in Nature Genetics – are built ... variation, authored by a team of deCODE scientists led by ...
(Date:3/25/2015)... San Francisco, CA (PRWEB) March 25, 2015 ... Provide Support for Novel Mechanism of Action in ... March 25, 2015 – Cytokinetics, Incorporated (Nasdaq: CYTK) ... its fast skeletal muscle troponin activator tirasemtiv in ... from a Phase IIa “Evidence of Effect” or ...
Breaking Biology Technology:SQI Diagnostics Inc. Announces New Nominees to SQI Diagnostics Board and Adjournment of Meeting 2SQI Diagnostics Inc. Announces New Nominees to SQI Diagnostics Board and Adjournment of Meeting 3SQI Diagnostics Inc. Announces New Nominees to SQI Diagnostics Board and Adjournment of Meeting 4SQI Diagnostics Inc. Announces New Nominees to SQI Diagnostics Board and Adjournment of Meeting 5S&P Capital IQ Initiates Coverage on Abattis Bioceuticals Corp. in S&P Capital IQ Factual Stock Reports 2S&P Capital IQ Initiates Coverage on Abattis Bioceuticals Corp. in S&P Capital IQ Factual Stock Reports 3S&P Capital IQ Initiates Coverage on Abattis Bioceuticals Corp. in S&P Capital IQ Factual Stock Reports 4S&P Capital IQ Initiates Coverage on Abattis Bioceuticals Corp. in S&P Capital IQ Factual Stock Reports 5Landmark deCODE Studies Demonstrate the Power of Truly Big Genomics for Improving Medicine Worldwide 2Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 2Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 3Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 4Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 5Cytokinetics Announces Publication of Results from Phase II Trial of Tirasemtiv in Patients with Myasthenia Gravis 6
... SCOTTSDALE, Ariz., June 23 MedPredict has ... strategic insight for pharma and,biotech companies hoping ... pain,management. The report, entitled "Thought Leader Insight ... conducted with a panel of,specialists in anesthesiology, ...
... enhance industry leader,s dermatological portfolio, CORAL ... Inc.,the world,s largest independent pharmaceutical company specializing ... definitive merger agreement,pursuant to which Stiefel Laboratories ... BTRX ), through a two-step,transaction, a ...
... Concuity,s Product Suite by Adding Price Transparency, ... /PRNewswire-FirstCall/,-- Concuity, a healthcare division of Trintech (Nasdaq: ... management and revenue recovery technology ("Peer,Reviewed by HFMA") ... Systems (FHS Corp), a provider of a web-based ...
Cached Biology Technology:In Pain Market, Huge Unmet Needs, Tough Regulatory Environment Challenge Pharmaceutical Companies, According to MedPredict 2Barrier Therapeutics to Merge Into Stiefel Laboratories 2Barrier Therapeutics to Merge Into Stiefel Laboratories 3Barrier Therapeutics to Merge Into Stiefel Laboratories 4Barrier Therapeutics to Merge Into Stiefel Laboratories 5Concuity Announces Partnership with Financial Healthcare Systems, LLC 2Concuity Announces Partnership with Financial Healthcare Systems, LLC 3Concuity Announces Partnership with Financial Healthcare Systems, LLC 4
... Cellject Uno Electroporator is a simple, ... optimum efficiencies in bacterial and yeast ... one of two voltages and either ... mm cuvettes. On pressing the pulse ...
Request Info...
Maxi XL Hybridization Oven for Extra Large bottles. 6 bottle (70 mm) rotisserie + shaker tray available for simultaneous use. Includes linear and orbital shaker trays, 4 extra large bottles, pack o...
Shake 'n' Stack oven - New Model (includes 10 bottle capacity rotisserie, adjustable feet, drip tray, manual)...
Biology Products: