A Warning Call of the American Robin, Turdus migratorius.

American Robin (Turdus migratorius) Science Article 8

abstract

In nesting time, American Robins of both sexes at times utter a high-pitched yet weak-sounding note that closely resembles that of the Cedar Waxwing-a thin ‘see-eep

MORRIS JACKSON, Auk, Vol. 69

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