Environmental contaminants in bald eagle eggs

Journal of Raptor Research
Abstracts of presentations made at the annual meeting of the Raptor Research Foundation, Inc., held at Tulsa, Oklahoma, on 6-10 November 1991
By: , and 



Bald Eagle eggs (1968-84) were analyzed for organochlorine pesticides, PCBs and mercury. DDE declined in WI, ME and the Chesapeake Bay. DDE was most closely related to shell thickness and reproduction at sampled breeding areas. Sixteen ppm DDE (wet weight) was associated with 15% shell thinning. Reproduction was normal when eggs at sampled breeding areas contained <3.6 ppm DDE; success was nearly halved between 3.6 and 6.3 ppm and halved again when concentrations exceeded 6.3 ppm. Other contaminants were associated with poor reproduction and eggshell thinning; however, their impact appeared secondary to that of DDE.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Environmental contaminants in bald eagle eggs
Series title Journal of Raptor Research
Volume 25
Issue 4
Year Published 1991
Language English
Contributing office(s) Patuxent Wildlife Research Center
Description 162 (abstract)
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Journal of Raptor Research
First page 162 (abs)