Navigation Links
Study: The bright red of cardinals means less in urban areas
Date:8/31/2010

COLUMBUS, Ohio Normally, the brilliant red of a male cardinal signals to females that he is a high-quality mate. But that may not be true of cardinals living in urban areas, a new study suggests.

Researchers found that the bright red feather coloration of male northern cardinals (Cardinalis cardinalis) was less related to body condition for birds living in urban forests than it is for those in rural forests. In other words, even cardinals in relatively poor condition may appear bright red in urban areas.

"We found that the relationship between brightness and body condition was stronger in more rural landscapes than it was in urban areas," said Amanda Rodewald, co-author of the study and professor of wildlife ecology at Ohio State University's School of Environment and Natural Resources.

"That means urbanization has the potential to disrupt cues that birds have long used to assess quality and choose mates."

Rodewald conducted the study with Todd Jones, an undergraduate student researcher at the time, and Daniel Shustack, a recent doctoral graduate. Their results appear in the current issue of The Wilson Journal of Ornithology.

The researchers studied 129 male and 145 female cardinals that were captured in 13 forests in central Ohio between 2006 and 2008. Each forest was rated as to the amount of urbanization surrounding it, and the researchers compared feather samples from cardinals at each site.

The feathers were photographed and the photos were analyzed by a software program that measured the hue, saturation and brightness of each feather.

They also measured body mass and size of the cardinals to indicate their body condition, or health. Body condition considers how much a bird weighs after adjusting for its frame size.

The researchers did not find any relation between female body condition and plumage brightness and whether they lived in a more urban or more rural area.


'/>"/>

Contact: Amanda D. Rodewald
Rodewald.1@osu.edu
614-247-6099
Ohio State University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Study: urban black bears live fast, die young
2. Study: Bird diversity lessens human exposure to West Nile Virus
3. Study: Tropical wetlands hold more carbon than temperate marshes
4. Study: Wildlife need more complex travel plans
5. Study: Elderly Women can increase strength but still risk falls
6. UNC study: Text messaging may help children fight off obesity
7. Study: Did early climate impact divert a new glacial age?
8. Study: Excessive use of antiviral drugs could aid deadly flu
9. UNC study: Tinkering with the circadian clock can suppress cancer growth
10. Study: Fluid buildup in lungs is part of the damage done by the flu
11. Study: Health undervalued in reproductive rights debate
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/22/2015)... Inc. (NASDAQ: NXTD and NXTDW) a biometric authentication company ... of the Wocket™ smart wallet at CES 2015 in Las ... one of the "11 Hot Products at CES" in a review published ... Far" by Newseveryday.com and "The top 10 gadgets from CES 2015" by ...
(Date:1/22/2015)... , January 22, 2015 , ... tenth year  The European Patent Office to present a ... Two British nominations to be featured: Christofer Toumazou and ... featuring former finalists and winners of the Award   ...
(Date:1/22/2015)... , Jan. 22, 2015 Infinisource has launched its ... the G2 model. The G2 sets a higher standard for ... human capital management solution. With plug-and-play installation, touch screen interface ... clock provides a robust time collection solution for the small ...
Breaking Biology News(10 mins):CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 2CES Response for NXT-ID's Wocket Smart Wallet Kicks Off 2015 3Ten Years of the European Inventor Award: A Retrospective Look at the Inventors and Ideas That Have Changed Our Lives 2Ten Years of the European Inventor Award: A Retrospective Look at the Inventors and Ideas That Have Changed Our Lives 3Infinisource's NXG series sets new time clock standard 2
... called ribonucleotides become embedded in genomic DNA, which contains ... cause problems for cells. It is known that ribonucleotides ... resulting in genomic instability and altered DNA metabolism, but ... ribonucleotides. A new study provides a mechanistic explanation ...
... and colleagues have produced the most comprehensive mathematical model ... to environmental change. The research, federally ... 2 in the journal Science . ... unites various sub-disciplines of population biology, including population ecology, ...
... Los Angeles, CA (December 2nd, 2011) Most of ... new results out in the journal Clinical Rehabilitation , ... to reduce early retirement on health grounds in Finland had ... evaluative study of vocational rehabilitation, which followed 872 participants and ...
Cached Biology News:Study identifies mechanisms cells use to remove bits of RNA from DNA strands 2Powerful mathematical model greatly improves predictions for species facing climate change 2Powerful mathematical model greatly improves predictions for species facing climate change 3Costly intervention program has no measurable effect on early retirement 2Costly intervention program has no measurable effect on early retirement 3
(Date:1/22/2015)... Selexis SA, a serial innovation company with proven ... for drug discovery to commercial manufacturing, announced today all ... Sequencing (NGS) data packages. The NGS analysis of ... the integrity of the gene, validation of the left ...
(Date:1/22/2015)... , Jan. 22, 2015   GenoSpace , a precision medicine ... to enable the broad use of genomic, imaging and other ... appointment of Michelle Munson , CEO of Aspera, an ... Logo - http://photos.prnewswire.com/prnh/20150122/170713 "We ...
(Date:12/24/2014)... Dec. 24, 2014  Vermillion, Inc. (Nasdaq:   VRML), ... announced today that the Company closed its previously ... Management, Jack W. Schuler , Birchview Fund ... $10.5 million, before offering expenses.  The proceeds will ...
(Date:12/24/2014)... MA (PRWEB) December 23, 2014 ... is designed to introduce cutting edge communication technology, ... of platform upgrades. This webinar series demonstrates online ... quest to leverage web conferencing’s most innovative and ...
Breaking Biology Technology:Selexis Generated Research Cell Banks Now Fully Sequenced Using Next-Generation Sequencing 2GenoSpace Expands Board with Appointment of Michelle Munson 2Vermillion Announces Closing of Equity Financing 2Vermillion Announces Closing of Equity Financing 3SoundConnect Launches Leading Edge Business Communications Webinar Series 2SoundConnect Launches Leading Edge Business Communications Webinar Series 3
... is about to emerge in the world of pesticides and ... to understand the implications for public health, ensure that this ... risks, researchers say in a new report. In a ... and Environmental Health , scientists from Oregon State University and ...
... Oct. 4 Amgen (Nasdaq: AMGN ) ... ,181, pivotal Phase 3 trials evaluating Vectibix® (panitumumab) in ... and second-line treatment for metastatic colorectal cancer (mCRC), respectively, ... Oncology . "Both studies demonstrated that ...
... NEW YORK, Oct. 4 Reportlinker.com announces that ... its catalogue: Global Soft Tissue ... This report analyzes the worldwide markets ... the following segments: Cartilage Allografts, Meniscus Allografts, and ...
Cached Biology Technology:New approaches needed to gauge safety of nanotech-based pesticides 2New approaches needed to gauge safety of nanotech-based pesticides 3Two Pivotal Vectibix® Phase 3 Studies in First and Second-Line Treatment of Metastatic Colorectal Cancer Published in the Journal of Clinical Oncology 2Two Pivotal Vectibix® Phase 3 Studies in First and Second-Line Treatment of Metastatic Colorectal Cancer Published in the Journal of Clinical Oncology 3Two Pivotal Vectibix® Phase 3 Studies in First and Second-Line Treatment of Metastatic Colorectal Cancer Published in the Journal of Clinical Oncology 4Two Pivotal Vectibix® Phase 3 Studies in First and Second-Line Treatment of Metastatic Colorectal Cancer Published in the Journal of Clinical Oncology 5Two Pivotal Vectibix® Phase 3 Studies in First and Second-Line Treatment of Metastatic Colorectal Cancer Published in the Journal of Clinical Oncology 6Two Pivotal Vectibix® Phase 3 Studies in First and Second-Line Treatment of Metastatic Colorectal Cancer Published in the Journal of Clinical Oncology 7Two Pivotal Vectibix® Phase 3 Studies in First and Second-Line Treatment of Metastatic Colorectal Cancer Published in the Journal of Clinical Oncology 8Two Pivotal Vectibix® Phase 3 Studies in First and Second-Line Treatment of Metastatic Colorectal Cancer Published in the Journal of Clinical Oncology 9Two Pivotal Vectibix® Phase 3 Studies in First and Second-Line Treatment of Metastatic Colorectal Cancer Published in the Journal of Clinical Oncology 10Two Pivotal Vectibix® Phase 3 Studies in First and Second-Line Treatment of Metastatic Colorectal Cancer Published in the Journal of Clinical Oncology 11Reportlinker Adds Global Soft Tissue Allografts Industry 2Reportlinker Adds Global Soft Tissue Allografts Industry 3Reportlinker Adds Global Soft Tissue Allografts Industry 4Reportlinker Adds Global Soft Tissue Allografts Industry 5Reportlinker Adds Global Soft Tissue Allografts Industry 6Reportlinker Adds Global Soft Tissue Allografts Industry 7Reportlinker Adds Global Soft Tissue Allografts Industry 8Reportlinker Adds Global Soft Tissue Allografts Industry 9Reportlinker Adds Global Soft Tissue Allografts Industry 10Reportlinker Adds Global Soft Tissue Allografts Industry 11
Microlite 1+ 1x12 Strip assembled, flat bottom; the ideal vessel for low signal luminescent reactions, offering medium binding with enhanced dynamic range, extra high reflectivity and minimal cross t...
... low temperature freezers offer a superior ... of biological samples with high capacities. ... inner doors ensure excellent warming protection ... ,Application oriented accessories simplify tracking of ...
...
...
Biology Products: