Intraspecific Nest Parasitism in the Savannah Sparrow

Savannah Sparrow (Passerculus sandwichensis) Science Article 6

abstract

Evidence of intraspecific nest parasitism in passetines is rare although some well documented cases do exist (Yom-Tov et al. 1974, Ibis 116: 87-90). This note describes an incident whose circumstances suggest that two complete clutches were laid simultaneously in the same nest by two female Savannah Sparrows (Passerculus sandwichensis).

PATRICK J . WEATHERHEAD AND RALEIGH J. ROBERTSON, Auk, Vol. 95

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