00000cam 2200000za 4500 9.856111 CaOODSP 20241203113642 cr ||||||||||| 180503s1995 onca|||#o f00| 0 eng d CaOODSP eng eng fre n-cn-bc CW69-1/86E-PDF Butler, Robert William. The patient predator [electronic resource] : foraging and population ecology of the great blue heron Ardea herodias in British Columbia / Robert W. Butler. Ottawa : Canadian Wildlife Service, c1995. 44 p. : ill. Occasional paper ; no. 86 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "This report presents the results of a six-year study (1986-91, including five breeding seasons and four winters) of the diet, food availability, foraging behaviour, use of habitats by age-classes and sex-classes, spacing of breeding colonies, and survival of the Great Blue Heron Ardea herodias on the Pacific coast of British Columbia. The general thesis of this study is that the availability of food energy largely dictates when herons use foraging habitats, the time of year that they breed, and which individuals survive"--Abstract. Issued also in print format. Includes abstract in French. gccst Aquatic birds gccst Ecology Herons Canada. Environment Canada. Canadian Wildlife Service. The patient predator : (CaOODSP)9.611945 Occasional paper (Canadian Wildlife Service) no. 86 (CaOODSP)9.504780 PDF 4.12 MB https://publications.gc.ca/collections/collection_2018/eccc/CW69-1-86-eng.pdf