Chemical residue content and hatchability of screech owl eggs
The Wilson Bulletin
By: Erwin E. Klaas and D. M. Swineford
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Abstract
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.
Suggested Citation
Klaas, E., and Swineford, D.M., 1976, Chemical residue content and hatchability of screech owl eggs: The Wilson Bulletin, v. 88, no. 3, p. 421-426.
| 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 |
| Publisher | Wilson |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 6 p. |
| First page | 421 |
| Last page | 426 |