||Dieldrin and DDT: Effects on Sparrow Hawk Eggshells and Reproduction.
Porter, Richard D. ;
Wiemeyer., Stanley N. ;
||Bureau of Sport Fisheries and Wildlife, Laurel, Md. Patuxent Wildlife Research Center.
Chlorine organic compounds ;
Animal ecology ;
Falco sparverius ;
Pesticide residues ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
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.