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'We Are The Champions' – The New Birdie Song

Date:
February 13, 2004
Source:
BioMed Central
Summary:
It's not just football supporters who join together in a rousing chorus to celebrate a victory. Winning a fight also appears to put the tropical boubou, an African bird, in the mood for a song.

It's not just football supporters who join together in a rousing chorus to celebrate a victory. Winning a fight also appears to put the tropical boubou, an African bird, in the mood for a song.

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Research published in BMC Ecology describes a rare example of a context-specific birdsong and identifies the tropical boubou as the first bird species known to sing a 'victory duet'.

The birds probably sing to deter other birds from intruding into their territory. According to the authors, "We were able to hear the male note of the victory display across two territories, further than notes of other duets. Also, it was typically sung from higher perches than other duets, making it more conspicuous."

Tropical boubous are monogamous birds. The male and female of a pair often sing duets, with each bird having a distinct part.

German researchers Ulmar Grafe and Johannes Bitz visited the Comoé National Park in Ivory Coast to find out how tropical boubous respond to their territory being invaded. The researchers broadcast recordings of four duets, which are often sung during contests over territory, to 18 different pairs of birds.

Sixteen of the tropical boubou pairs stood their ground, and 11 of these pairs sung the 'victory duet' within 30 minutes of the researchers turning off their tape machine. The birds that flew off, presumably after 'losing' the battle, didn't sing a note for at least 30 minutes.

The 'victory duet' was the first and only song that the birds sung within 30 minutes of the antagonistic encounter. The tropical boubous waited for at least 150 seconds of silence, to check that the invaders had gone, before they announced they were the winners.

"Analysis revealed that the presumptive victory display was sung significantly more often after than before or during playback of recordings," write the researchers.

Like other duets sung by male and female tropical boubous, the 'victory duet' contained "highly synchronised tonal notes that were often repeated." However this song was longer than the other 12 songs in the tropical boubous' repertoire, with the same motif being sung around 40 times on average.

###

This release is based on the following article:

An acoustic postconflict display in the duetting tropical boubou (Laniarius aethiopicus): a signal of victory?T Ulmar Grafe, Johannes H BitzBMC Ecology 2004, 4:1Published on 28 January 2004

This research is available online free of charge according to BMC Ecology's Open Access policy at: http://www.biomedcentral.com/content/pdf/1472-6785-4-1.pdf


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The above story is based on materials provided by BioMed Central. Note: Materials may be edited for content and length.


Cite This Page:

BioMed Central. "'We Are The Champions' – The New Birdie Song." ScienceDaily. ScienceDaily, 13 February 2004. <www.sciencedaily.com/releases/2004/02/040212081604.htm>.
BioMed Central. (2004, February 13). 'We Are The Champions' – The New Birdie Song. ScienceDaily. Retrieved December 22, 2014 from www.sciencedaily.com/releases/2004/02/040212081604.htm
BioMed Central. "'We Are The Champions' – The New Birdie Song." ScienceDaily. www.sciencedaily.com/releases/2004/02/040212081604.htm (accessed December 22, 2014).

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