Zebra finches choose nest materials based on past experience, new research shows

Zebra finches choose nest materials based on past experience, new research shows
A female (left) and male zebra finch. New U of A research shows that the birds' prior experience raising chicks influences whether they stick with tried-and-true materials or try something new when building nests. (Photo: Animal Cognition Research Group) Credit: Animal Cognition Research Group

When building a nest, previous experience raising chicks will influence the choices birds make, according to a new study by University of Alberta scientists.

The results show that that have successfully raised families stick with tried-and-true methods when building their nests, whereas less successful birds will try something new.

"We found that when presented with a choice between a familiar material, coconut fiber, and a never-before-encountered material, white string, who had successfully raised chicks preferred to stick with the same material they had previously used. Birds who failed to raise chicks built nests with equal amounts of familiar and novel material," explained Andrés Camacho-Alpízar, a Ph.D. student in the Faculty of Science.

Male Zebra Finch selecting string

The research shows that is a behavior based on learning and , and sheds new light on the decision-making processes birds use when creating nests.

"Much like human architecture is ever-adapting—from changing styles to improved —birds also adapt their nest-building behavior based on trial-and-error learning," added Camacho-Alpízar, who conducted the study under the supervision of Lauren Guillette, assistant professor in the Department of Psychology.

The study also showed that all birds took fewer days to complete their second compared with their first nest.

Zebra Finch nests

Nests built by previously successful (left) and unsuccessful (right) zebra finches. The nest on the left is built mainly with coconut fiber, a familiar material type for the birds. The nest on the right was built with a more equal proportion of familiar and new material, in this case white string. (Photo: Animal Cognition Research Group)

"This study adds to the small but growing area of research about nest-building behavior that challenges long-held assumptions about why animals do what they do," said Guillette.

"While one can find many references in both the scientific and lay literature that suggest nest building in birds is entirely pre-programmed, our work shows that birds learn and modify the material they put into their nest based on past breeding experiences with that or similar material."


Explore further

Nest-building in finches is a learning process developed through experience

More information: Andrés Camacho-Alpízar et al, If it ain't broke don't fix it: Breeding success affects nest-building decisions, Behavioural Processes (2021). DOI: 10.1016/j.beproc.2021.104336
Journal information: Behavioural Processes

Citation: Zebra finches choose nest materials based on past experience, new research shows (2021, February 25) retrieved 9 May 2021 from https://phys.org/news/2021-02-zebra-finches-materials-based.html
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