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Dieldrin and DDT: Effects on sparrow hawk eggshells and reproduction

Richard D. Porter·Stanley N. Wiemeyer
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Abstract

Patterns of reproductive failure in declining populations of several European and North American raptorial species were duplicated experimentally with captive American sparrow hawks Falco sparverius that were given a diet containing two commonly used organochlorine insecticides. Major effects on reproduction were increased egg disappearance, increased egg destruction by parent birds, and reduced eggshell thickness.

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Richard D. Porter, Stanley N. Wiemeyer. 1969. Dieldrin and DDT: Effects on sparrow hawk eggshells and reproduction. https://doi.org/10.1126/science.165.3889.199

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