Navigation Links
Timely change for tweeters' tune
Date:11/20/2012

Do birds change their tune in response to urban noise? It depends on the bird species, according to Dr. Alejandro Ariel Ros-Cheln from the Universidad Nacional Autnoma de Mxico and colleagues. Their work shows that while some birds do adapt their songs in noisy conditions by means of frequency changes, others like the vermilion flycatchers adapt their song by means of changes in song lengths. The work is published online in Springer's journal, Behavioral Ecology and Sociobiology.

Birds use their songs during social interactions to attract females and repel intruders. Factors affecting acoustic communication, such as urban noise, may therefore impair breeding success. Research to date has shown that several songbird (or oscine) species like robins, nightingales and blackbirds, adapt their song in response to noise. This is done in order to improve acoustic communication in noisy conditions. However, little work has been done on the more tropical sister group of the oscines, the sub-oscines, which includes the vermillion flycatcher.

Rios-Cheln and team investigated whether male vermilion flycatchers adapted their song under noisy conditions in the same way as their less tropical sister group. They recorded the songs of 29 territorial vermilion flycatcher males in different parks and urban areas of Mexico City. They registered noise levels at different moments of both the pre-dawn and dawn chorus, measured song length, and counted the total number of elements in the birds' song to assess song versatility.

They found that males occupying territories with relatively high noise levels produced longer songs, whereas males in quieter places sang both long and short songs. Males also showed song plasticity as they sang less versatile songs later in the morning when noise level was higher, but time of day seemed to play a more important role in driving this shift than did noise levels.

The authors conclude, "While these results show that time of day has an effect on individual song versatility, we cannot discard an influence of noise... this study supports the idea that sub-oscine adaptation to noise is different in degree and mode to that taking place among oscines, suggesting heterogeneity in the capacity of bird species to colonize and survive in the urban environment."


'/>"/>
Contact: Alexander Brown
alexander.brown@springer.com
212-620-8063
Springer Science+Business Media
Source:Eurekalert

Related biology news :

1. Estrogenic plants linked to altered hormones, possible behavior changes in monkeys
2. Multiple sclerosis immune exchange between brain and blood is uncovered
3. Indirect effects of climate change could alter landscapes
4. University of Michigan, Michigan State University award grants for Great Lakes climate change research
5. Climate change increases stress, need for restoration on grazed public lands
6. Plants and soils could exacerbate climate change as global climate warms
7. Climate change threatens giant pandas bamboo buffet -- and survival
8. Raising the african voice on climate change
9. Climate change threatens giant pandas bamboo buffet and survival
10. The IPCC Report on Climate Change - Swedish professor Thomas Sterner selected as 1 of the experts
11. The Phosphorus Index: Changes afoot
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/16/2016)... The global Biometric ... USD 1.83 billion by 2024, according to a ... proliferation and increasing demand in commercial buildings, consumer ... the market growth.      (Logo: ... of advanced multimodal techniques for biometric authentication and ...
(Date:6/7/2016)... 7, 2016  Syngrafii Inc. and San Antonio ... that includes integrating Syngrafii,s patented LongPen™ eSignature "Wet" ... collaboration will result in greater convenience for SACU ... while maintaining existing document workflow and compliance requirements. ... Highlights: ...
(Date:6/2/2016)... LONDON , June 2, 2016 ... Systems, Manned Platforms, Unmanned Systems, Physical Infrastructure, Support & ... intelligence provider visiongain offers comprehensive analysis of ... that this market will generate revenues of $17.98 billion ... Systems acquired DVTEL Inc, a leader in software and ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... ... ... Supplyframe, the Industry Network for electronics hardware design and ... in Pasadena, Calif., the Design Lab’s mission is to bring together inventors and ... brought to market. , The Design Lab is Supplyframe’s physical representation of one ...
(Date:6/23/2016)... BEACH, Calif. , June 23, 2016  Blueprint ... new biological discoveries to the medical community, has closed ... co-founder Matthew Nunez . "We have ... us with the capital we need to meet our ... will essentially provide us the runway to complete validation ...
(Date:6/23/2016)... ... June 23, 2016 , ... ... and technical consulting, provides a free webinar on Performing Quality Investigations: ... 2016 at 12pm CT at no charge. , Incomplete investigations are still a ...
(Date:6/22/2016)... Cell Applications, Inc. and StemoniX announced ... up to one billion human induced pluripotent stem ... These high-quality, consistent stem cells enable researchers to ... more time doing meaningful, relevant research. This achievement ... process that produces affordable, reliable HiPSC for life ...
Breaking Biology Technology: