Navigation Links
Birds' Songs Reflect Changing Weather Patterns: Study
Date:8/9/2012

THURSDAY, Aug. 9 (HealthDay News) -- North American birds that live in areas with dramatic seasonal swings from wet to dry sing more versatile songs than others, according to a new study.

This musical flexibility helps birds ensure their calls are heard no matter what conditions they face, said researchers from Australian National University in Canberra and the National Evolutionary Synthesis Center in Durham, N.C.

"They may sing certain notes really low or really high, or they may adjust the loudness or tempo," the study's co-author, Clinton Francis, of the National Evolutionary Synthesis Center, said in a center news release.

In conducting the study, the researchers analyzed the songs of more than 400 male birds. The recordings included 44 species, such as orioles, blackbirds, warblers, sparrows, cardinals, finches, chickadees and thrushes.

The recordings of whistles, warbles, cheeps, chirps, trills and twitters were converted into a sound graph using computer software. This enabled the researchers to see each song as a complex pattern of lines and measure its characteristics, such as its length, its highest and lowest notes, how many notes it included and how far apart the notes were.

In addition to the weather patterns, the researchers took geography into account. They found the birds that experience the most extreme differences in precipitation sing more complex songs, such as house finches and plumbeous vireos.

"Precipitation is closely related to how densely vegetated the habitat is," co-author Iliana Medina, of Australian National University, said in the news release. "Birds that have more flexibility in their songs may be better able to cope with the different acoustic environments they experience throughout the year."

Francis said sound transmits differently through different vegetation types. "Often when birds arrive at their breeding grounds in the spring, for example, there are hardly any leaves on the trees," he said. "Over the course of just a couple of weeks, the sound transmission changes drastically as the leaves come in."

The study authors noted environmental variation isn't the only factor that comes into play. Species with noticeable color differences between male and female birds also sing more variable songs, they said.

The study was published online Aug. 1 in the journal Biology Letters.

More information

The U.S. National Wildlife Federation provides more information on bird songs and calls.

-- Mary Elizabeth Dallas

SOURCE: National Evolutionary Synthesis Center, news release, Aug. 3, 2012


'/>"/>
Copyright©2012 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Could Your Personality Be Reflected in Your Pooch?
2. NAMS journal Menopause reflects on the WHI 10 years later
3. Gut Microbes Might Reflect Health, Diet of Older Adults
4. Brain structure helps guide behavior by anticipating changing demands
5. Red Wine, Weather May Trigger Migraines
6. Use Caution When Exercising in Hot Weather
7. Extreme Heat Biggest Weather Killer, Expert Warns
8. Weather prediction task: Learning achievement with and without stress
9. Study Suggests Vaccine May Help Kids With Brain Cancer
10. Study reveals how cancer drug causes diabetic-like state
11. Coffee Drinking in Pregnancy Wont Lead to Sleepless Baby: Study
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Birds' Songs Reflect Changing Weather Patterns: Study
(Date:5/27/2017)... ... 27, 2017 , ... From May 21-23, hearing healthcare professionals gained a competitive ... at the Marriott Syracuse Downtown Hotel in Syracuse, New York. , As EarQ’s ... hearing healthcare providers to help them stay ahead in the industry. At the event, ...
(Date:5/26/2017)... ... May 26, 2017 , ... Leading CEOs from biotech, ... 30th and 31st at The Four Seasons Hotel Boston. , The Boston ... sciences, offering exclusive access to key decision makers who influence deal making and ...
(Date:5/26/2017)... ... May 26, 2017 , ... A new analysis of ... the healthiest seniors are located in the Midwest. With the average cost of healthcare ... people are concerned with both the quality and affordability of where they live. An ...
(Date:5/26/2017)... ... ... After raising nearly $30,000 on Kickstarter , about three-times its original ... discounted crowdfunding price on Indiegogo . , “Along with creating an anti-stress gadget ... a fidget toy to the market that was made of superior quality and wouldn’t ...
(Date:5/26/2017)... ... May 26, 2017 , ... Dr. Alex Rabinovich, a highly-skilled ... a new, informational blog post on insurance options. If a Bay Area patient has ... help save time and money. Visiting an in-network provider for a second opinion can ...
Breaking Medicine News(10 mins):
(Date:5/10/2017)... Md. , May 10, 2017 CSSi, ... solutions for the clinical research industry, is proud to ... www.CSSiEnroll.com . The new website features both enriched content ... user experience and enhances the company,s already well-established position ... industry. "After many months of hard ...
(Date:5/9/2017)... , May 9, 2017  Semler Scientific, ... provides technology solutions to improve the clinical effectiveness ... results for the first quarter ended March 31, ... products enable our customers to identify when preventive ... intervene before events like heart attacks or strokes ...
(Date:5/6/2017)... , May 5, 2017  May is Stroke ... one of the most important methods to prevent a ... the Centers for Disease Control and Prevention, undetected and ... 1 Omron, the global leader in personal heart ... the elimination of heart attack and stroke and is ...
Breaking Medicine Technology: