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.
Published by: Academic book publishersPublished as an academic monograph.
This reference was resolved automatically against Crossref and OpenAlex on 2026-08-11.
NatureHQ summarises research in its own words and does not reproduce published text. Reviewed 2026-08-09.