Study
A comparative approach to vocal learning: song development in white-crowned sparrows
Marler, Peter
Journal of Comparative and Physiological Psychology, 1970
Young white-crowned sparrows were hand-raised in acoustic isolation and exposed to recorded songs at different ages, or to none at all, and their adult songs were compared with the tutor songs and with wild dialects.
- Studied in
- Zonotrichia leucophrys
- Sample size
- hand-raised sparrows across tutoring conditions
Birds tutored during a sensitive period early in life reproduced that dialect as adults. Birds isolated throughout produced abnormal song with the species’ broad structure but none of the local detail. Tutoring outside the sensitive window had little effect.
What it means
The authors' reading, and ours. Where they differ, that difference is the point.
How the authors put it
Song development combines an inherited template with learning from a tutor during a restricted sensitive period.
How NatureHQ reads it
The experiment that established vocal learning as a real category, and it did so by separating two things that look identical from outside. An isolated sparrow still sings — the species’ rough structure is inherited — but it sings nothing like its neighbours, because the specific pattern is learned. That is why regional dialects exist in birds at all, and why they are cultural rather than genetic.
- Hand-raised birds in acoustic isolation, which is a severely impoverished environment.
- One species; the balance of innate and learned components varies widely across songbirds.
- Sensitive-period boundaries are less sharp in later work than the original result suggested.
What this study is used for on NatureHQ
One study can inform several subjects. Here is everywhere this one is cited.
Animal communication
Songbirds learn their song from other birds, during a window early in life
Animal communication
A canary’s song-control brain regions grow every spring and shrink again
How birds learn to sing
A songbird raised where it can hear no other bird still sings — but it sings something structurally wrong, because the specific pattern has to be learned from an adult.
Birdsong dialects
Local song variants are learned from local birds, not inherited. Populations a few kilometres apart can sing distinguishably different songs with no genetic difference behind it.
Published by: Academic book publishersPublished as an academic monograph.
Checked against Crossref and OpenAlex on 2026-09-28, and they agree on the title, the authors and the year.
NatureHQ summarises research in its own words and does not reproduce published text. Reviewed 2026-08-09.