Chemical residue content and hatchability of screech owl eggs

The Wilson Bulletin
By:  and 



Eggs of wild Screech Owls were collected from nests in northwestern Ohio in 1973. One egg was taken from each of 19 nests near the start of incubation. Mean shell thickness in these 19 eggs and mean thickness of 16 unhatched eggs did not differ from 49 archival eggs collected in Ohio and Pennsylvania prior to the widespread use of organochlorine pesticides. Residues were generally low although all eggs contained DDE and PCB?s. No relationship was found between hatching failures and the presence of organochlorine residues. Low residues are consistent with a long history of good nesting success and a stable population.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Chemical residue content and hatchability of screech owl eggs
Series title The Wilson Bulletin
Volume 88
Issue 3
Year Published 1976
Language English
Contributing office(s) Patuxent Wildlife Research Center
Description 421-426
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Wilson Bulletin
First page 421
Last page 426