Pesticides: eggshell thinning and lowered production of young in prairie falcons

Journal Article · Sat Mar 14 23:00:00 EST 1970 · BioScience; (United States)

DOI:https://doi.org/10.2307/1295071· OSTI ID:6252733

Enderson, J H; Berger, D D

The precipitous decline of the peregrine falcon (Falco peregrinus) in both hemispheres has been attributed to certain agricultural toxic chemicals, but North American prairie falcons (F. mexicanus) have not shown drastic population change. The authors report here on the relationships of experimentally introduced dieldrin and the natural contaminant DDE to aspects of nesting success of prairie falcons in Colorado and Wyoming in 1967 and 1968. The data show that high pesticide residues in egg contents, eggshell thinning, and pronounced hatching failure are correlated events. 9 references, 1 figure, 3 tables.

• Research Organization: Colorado College, Colorado Springs
• OSTI ID: 6252733
• Journal Information: BioScience; (United States), Journal Name: BioScience; (United States) Vol. 20:6; ISSN BISNA
• Country of Publication: United States
• Language: English

Related Subjects

560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ANIMALS
BIRDS
COLORADO
CONTAMINATION
DATA
DIELDRIN
DIMENSIONS
DISTRIBUTION
EGGS
EXPERIMENTAL DATA
FEDERAL REGION VIII
INFORMATION
INSECTICIDES
NORTH AMERICA
NUMERICAL DATA
PESTICIDES
POPULATION DENSITY
PRODUCTIVITY
RESIDUES
THICKNESS
TISSUE DISTRIBUTION
TOXICITY
USA
VERTEBRATES
WYOMING