00000nam 2200000za 4500 9.611945 CaOODSP 20240527135427 ta 150406|1994||||xxc||||| f|0| 0 eng d 0-662-23144-9 0576-6370 CaOODSP eng n-cn--- CW69-1/86E Canadian Wildlife Service. The patient predator : foraging and population ecology of the Great Blue Heron Ardea herodias in British Columbia / by Robert W. Butler. Ottawa - Ontario : Environment Canada. 1994. 44p. : graphs, maps, references, tables ; 28 cm. Occasional paper - Canadian Wildlife Service 0576-6370 86 "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. 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 Résumés en français Softcover Birds gcpds Butler, Robert W. The patient predator (CaOODSP)9.856111 Occasional paper (Canadian Wildlife Service) 0576-6370 86 (CaOODSP)9.514489