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:10/29/2014)... the international Cancer Genomics of the Kidney consortium ... kidney cancer and exposure to aristolochic acid, an ... in Nature Communications , have important implications ... than 140,000 people every year, and in Central ... part of the International Cancer Genome Consortium (ICGC), ...
(Date:10/28/2014)... of the tragic realities of cancer is that ... toxic and their effectiveness varies unpredictably from patient ... poised to change this reality by rapidly assessing ... an individual,s cancer before chemotherapy begins. , A ... by Assistant Professor Melissa Skala has developed the ...
(Date:10/28/2014)... Scientists from North America, Europe and China have published ... Academy of Sciences that reveals important details about ... our planet., From strange and exotic algae, mosses, ferns, ... the grains and vegetables we eat and the ornamental ... shares over a billion years of history., "Our study ...
Breaking Biology News(10 mins):Kidney cancer in Central Europe 2Improving breast cancer chemo by testing patient's tumors in a dish 2Improving breast cancer chemo by testing patient's tumors in a dish 3New study uses DNA sequences to look back in time at key events in plant evolution 2New study uses DNA sequences to look back in time at key events in plant evolution 3
... shows that birds may choose their mate with the help ... their young a more efficient immune system. This has been ... in Sweden, in a Swedish-French collaboration. Humans and many ... mate with the right smell can give the offspring an ...
... why autism spectrum disorders are almost five times more common ... to a five-year, $15 million National Institutes of Health (NIH) ... Centers of Excellence (ACE) research program. Led by ... Yale ACE award is part of a $100 million National ...
... - Influenza outbreaks in the United States typically begin ... spread in seasonal waves across geographic zones. But the ... to the next has baffled scientists. In a ... Obscure Consequence," Elena Naumova, Ph.D., professor of civil and ...
Cached Biology News:Influenza research: Can dynamic mapping reveal clues about seasonality? 2
(Date:10/30/2014)... Investor-Edge has initiated coverage on ... Medivation Inc. (NASDAQ: MDVN ), Pharmacyclics Inc. ... MKT: SYN), and Ironwood Pharmaceuticals Inc. (NASDAQ: IRWD). Free ... http://investor-edge.com/register . On Wednesday, October 29, ... the Dow Jones Industrial Average declined 0.18%, to finish ...
(Date:10/30/2014)... SoundConnect , an industry leading ... end users the key to turning this already ... adding voice enablement and hybrid audio conferencing. , ... communication tool that includes presence, instant messaging and ... becomes a comprehensive unified communications solution. Adding the ...
(Date:10/30/2014)... Avure Technologies celebrates a year of success and ... its fleet of high volume High Pressure Processing (HPP) systems. ... return to PackExpo this year, which is where we first ... Jeff Williams, CEO at Avure. “Sales of the new Avure ... meeting the challenges of market demand for higher throughput. We ...
(Date:10/30/2014)... in the development of quantum technologies has been proposed ... published today (28 October) in Nature Communications , ... a new type of flexibly designed microscopic trap for ... and specialised superfast computers, often depend on harnessing the ... these tiny particles are hugely problematic because of the ...
Breaking Biology Technology:Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 2Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 3Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 4Biotech Equities Movers and Shakers - Organovo Holdings, Medivation, Pharmacyclics, Synthetic Biologics, and Ironwood Pharma 5SoundConnect Launches Voice Enablement and Hybrid Audio Conferencing for Office 365 2SoundConnect Launches Voice Enablement and Hybrid Audio Conferencing for Office 365 3In High Demand: New High Pressure Processing (HPP) System with Maximum Throughput Drives Strong Sales 2In High Demand: New High Pressure Processing (HPP) System with Maximum Throughput Drives Strong Sales 3
... Aaron Mitchell, managing principal at global management consulting firm ... of 2011 by Consulting Magazine. Mitchell was recognized for directing ... several years and during a major, recent product launch. ... top consultants," said Mitchell, who has more than 10 years ...
... 1, 2011 Reportlinker.com announces that a ... its catalogue: Biochips and ... http://www.reportlinker.com/p0350354/Biochips-and-Microarrays---Technologiesmarkets-and-companies.html?utm_source=prnewswire&utm_medium=pr&utm_campaign=Genomics This ... based on technologies and applications. The report ...
... Reportlinker.com announces that a new market ... Osteosarcoma Therapeutics - Pipeline ... http://www.reportlinker.com/p0546797/Osteosarcoma-Therapeutics---Pipeline-Assessment-and-Market-Forecasts-to-2017.html?utm_source=prnewswire&utm_medium=pr&utm_campaign=Pathology ... Forecasts to 2017 Summary ...
Cached Biology Technology:Managing Principal at ZS Associates Named One of Consulting Magazine's Top 25 Consultants of 2011 2Reportlinker Adds Biochips and Microarrays - Technologies, markets and companies 2Reportlinker Adds Biochips and Microarrays - Technologies, markets and companies 3Reportlinker Adds Osteosarcoma Therapeutics - Pipeline Assessment and Market Forecasts to 2017 2Reportlinker Adds Osteosarcoma Therapeutics - Pipeline Assessment and Market Forecasts to 2017 3Reportlinker Adds Osteosarcoma Therapeutics - Pipeline Assessment and Market Forecasts to 2017 4Reportlinker Adds Osteosarcoma Therapeutics - Pipeline Assessment and Market Forecasts to 2017 5Reportlinker Adds Osteosarcoma Therapeutics - Pipeline Assessment and Market Forecasts to 2017 6Reportlinker Adds Osteosarcoma Therapeutics - Pipeline Assessment and Market Forecasts to 2017 7Reportlinker Adds Osteosarcoma Therapeutics - Pipeline Assessment and Market Forecasts to 2017 8Reportlinker Adds Osteosarcoma Therapeutics - Pipeline Assessment and Market Forecasts to 2017 9Reportlinker Adds Osteosarcoma Therapeutics - Pipeline Assessment and Market Forecasts to 2017 10
ERalpha (Ser 104/106)...
... Phosphatase, Calf Intestinal (CIAP), catalyzes the hydrolysis ... ribo- and deoxyribonucleoside triphosphates. This enzyme is ... linearized cloning vector DNA by removing phosphate ... be used for the dephosphorylation of 5 ...
Mouse CXCR3 Allophycocyanin MAb (Clone 220803)...
Homo sapiens palladin...
Biology Products: