Canaries: A bad performance is better than no performance at all (w/Audio)

May 27, 2009
Young male canaries sing normally, despite having heard poor songs as juveniles from role models. Credit: Image: Max Planck Institute for Ornithology

(PhysOrg.com) -- The learning of birdsong resembles the learning of speech in humans. Crucial for the process are acoustic perception and the ability to produce sound. Social isolation leads to a disturbed vocal development both in humans and in birds. When children grow up without contact to other humans they either develop no or a rudimentary form of human language.

A similar scenario occurs in when juveniles are removed from their parents and are raised apart from the of conspecifics. Although these birds develop song, it usually contains abnormalities. Whether the descendants of such birds accept these abnormal songs of their parents as a song model was investigated by researchers around Sandra Belzner and Stefan Leitner from the Max Planck Institute for Ornithology in Seewiesen on domesticated canaries.

This is the sonogram of a tutor (above) and that of a juvenile at 12 months (below). The corresponding audio files are available to listen to below under related links. Credit: Image: Max Planck Institute for Ornithology

The researchers established a group of "poor"-singing tutors by raising young canaries in isolation from adult males but in contact with peers and females.

When these poor singers later on sired offspring, the adult males were removed only after juveniles had reached the age of 60-70 days and thus had started song development already. Detailed song analysis showed that the juveniles did not simply copy the bad songs of their tutors, but rather developed a version that resembled more the song of normal canaries. "Apparently these birds possess an innate template for species-specific song that needs to be activated by hearing song", says Cornelia Voigt, co-author of the study.

This video is not supported by your browser at this time.
Sonogram of a tutor canary

This video is not supported by your browser at this time.
Sonogram of a juvenile canary.

When the researchers introduced the male in their second year of life to normally singing canary males, they found that their songs did not contain any changes. Only the syllable repetition rate had slightly increased, which means, their songs became faster. "This result is particularly interesting, as it shows that the juveniles, by hearing their tutors, had completed their song development after the first year. The song quality of the tutors only played a minor role during this process", concludes Stefan Leitner. In contrast, birds that do not hear songs as juveniles delay the closure of their song development phase and still make corrections when hearing a suitable model later in life".

More information: Belzner, S., Voigt, C., Catchpole, C.K., Leitner, S. Song learning in domesticated canaries in a restricted acoustic environment, Proceedings of the Royal Society of London, Series B, Online publication 27.05.2009

Source: Max-Planck-Gesellschaft (news : web)

Explore further: World's first microbe 'zoo' opens in Amsterdam

add to favorites email to friend print save as pdf

Related Stories

Female birds boost up their eggs when hearing sexy song

Jun 08, 2006

In a new study published in the latest issue of Ethology researchers show that female songbirds can alter the size of eggs and possibly the sex of their chicks according to how they perceive their mate’s quality.

Female Birds Boost Up Their Eggs When Hearing Sexy Song

Jul 17, 2006

In a new study published in the latest issue of Ethology researchers show that female songbirds can alter the size of eggs and possibly the sex of their chicks according to how they perceive their mate's quality. The resear ...

Recommended for you

World's first microbe 'zoo' opens in Amsterdam

9 hours ago

The world's first "interactive microbe zoo" opened in Amsterdam on Tuesday, shining new light on the tiny creatures that make up two-thirds of all living matter and are vital for our planet's future.

Study shows how chimpanzees share skills

10 hours ago

Evidence of new behaviour being adopted and transmitted socially from one individual to another within a wild chimpanzee community is publishing on September 30 in the open access journal PLOS Biology. This i ...

Little blue penguin back at sea after hospital stint

15 hours ago

Wildbase Recovery Community Trust ambassador and Rangitikei MP Ian McKelvie joined Massey University veterinary staff to release a little blue penguin back into the sea at Himatangi Beach this morning.

User comments : 0