Dieldrin and DDT: Effects on Sparrow Hawk Eggshells and Reproduction
- 11 July 1969
- journal article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 165 (3889), 199-200
- https://doi.org/10.1126/science.165.3889.199
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 sparvcrius 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.Keywords
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