00000nam 2200000za 4500 9.857471 CaOODSP 20241203113643 cr ||||||||||| 180605s1994 oncbk ob f000 0 eng d 0662221516 0831-6481 CaOODSP eng eng fre n-cn-on CW69-5/202E-PDF CW69-5/202E McNicholl, Martin K. Bluebird nest-box trials in Ontario and their usefulness for bioeffects monitoring of agricultural chemicals [electronic resource] / by Martin K. McNicholl, William F. Read, D.V. (Chip) Weseloh. Burlington, Ont. : Canadian Wildlife Service, Ontario Region, 1994. 83 p. : form, maps. Technical report series ; no. 202 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (p. 48-61). "The Canadian Wildlife Service has been monitoring a wide variety of chemical contaminants in wildlife. This monitoring has been ongoing for several years, and is primarily from aquatic ecosystems. Recent interest in pesticides and other contaminants in terrestrial ecosystems has prompted a search for one or more appropriate monitor species. Bird species which breed in nest boxes are relatively easy to study and manipulate. They also lend themselves well to volunteer participation. In addition, several such species are distributed widely throughout the province. This paper summarizes known bluebird trail activity in Ontario. It presents details of a 1987 survey of bluebird utilization of nest-box trails in Ontario. Finally, the paper assesses the feasibility of using bluebird trails to assist in monitoring the effects of agricultural chemicals on natural-components of agriculturally-modified ecosystems in Ontario"--Introd., p. 4-5. Issued also in print format. Includes introduction in French. Eastern bluebird Indicators (Biology) Pesticides Ontario Read, William F. Weseloh, D. Vaughn. Canada. Environment Canada. Canadian Wildlife Service. Ontario Region. Technical report series (Canadian Wildlife Service) no. 202. (CaOODSP)9.504438 PDF 4.42 MB https://publications.gc.ca/collections/collection_2018/eccc/cw69-5/CW69-5-202-eng.pdf