Partitioning of Food and Niche Characteristics of Coexisting Accipiter during Breeding

The abundance of resources and their use by Accipiter in two areas within Oregon from 1969 through 1974 are presented. In the coastal mountains of northwestern Oregon only Sharp-shinned Hawks (Accipiter striatus) and Cooper's Hawks (A. cooperii) nested. In the remainder of the state, A. striatu...

Full description

Saved in:
Bibliographic Details
Published in:The Auk 1984-01, Vol.101 (4), p.761-779
Main Authors: Reynolds, Richard T., Meslow, E. Charles
Format: Article
Language:English
Subjects:
Accipiter
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Autoecology
Biological and medical sciences
Bird nesting
Birds
Birds of prey
Coniferous forests
Diet
Ecological competition
Foraging
Fundamental and applied biological sciences. Psychology
Hawks
Mammals
Taxa
Vertebrata
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The abundance of resources and their use by Accipiter in two areas within Oregon from 1969 through 1974 are presented. In the coastal mountains of northwestern Oregon only Sharp-shinned Hawks (Accipiter striatus) and Cooper's Hawks (A. cooperii) nested. In the remainder of the state, A. striatus, A. cooperii, and Northern Goshawks (A. gentilis) were syntopic during the nesting season. The number of species and the total density of birds in eastern Oregon were about one-half those in northwestern Oregon. Mean prey size of A. striatus in northwestern Oregon (12.8 g) was significantly smaller than that of the same species in eastern Oregon (28.4 g). Accipiter striatus diets in both areas were composed almost entirely of birds (
ISSN:0004-8038
1938-4254
DOI:10.2307/4086903