Age-specific productivity and nest site characteristics of Cooper's hawks (Accipiter cooperii)
Northwest Science
3049_Moore.pdf
By: K.R. Moore and C. J. Henny
Links
- Document: Report (html)
- Download citation as: RIS | Dublin Core
Abstract
Nesting Cooper's Hawks (Accipiter cooperii) were studied in northeastern Oregon. Second-year (SY) males did not breed, but 22 percent of the breeding females were SY's. Mean clutch size (P = 0.012) and mean number of young fledged per pair that laid eggs (P < 0.10) were lower for SY females than for adult (after second year [ASY}) females; however, an equal percentage of the eggs (excluding a collected sample egg) yielded fledged young for each age class. Stepwise discriminant analysis suggested differences in structural characteristics of the nest site habitat for ASY and SY females, i.e., SY female nest sites were associated with younger successional stages than ASY female nest sites. Nests of both age groups were built in trees with high crown volume, but ASY females utilized mistletoe (Arceuthobium sp.) for nest structures more frequently (P < 0.01) than SY females.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Age-specific productivity and nest site characteristics of Cooper's hawks (Accipiter cooperii) |
| Series title | Northwest Science |
| Volume | 58 |
| Issue | 4 |
| Year Published | 1984 |
| Language | English |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 290-299 |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Northwest Science |
| First page | 290 |
| Last page | 299 |
| Google Analytic Metrics | Metrics page |