00000nam 2200000za 4500 9.856844 CaOODSP 20241203113643 cr ||||||||||| 180522t19911990bccb ob f000 0 eng d 0662186583 0831-6481 CaOODSP eng eng fre n-cn-bc CW69-5/121E-PDF CW69-5/121E Rodway, Michael S. British Columbia seabird colony inventory. Report #7, Northern mainland coast [electronic resource] / Michael S. Rodway and Moira J.F. Lemon. Delta, B.C. : Canadian Wildlife Service, Pacific and Yukon Region, 1991, c1990. xi, 182 p. : maps. Technical report series ; no. 121 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (p. 178-179). "The Canadian Wildlife Service conducted detailed inventories of seabird colonies along the northern mainland coast in 1983, 1987 and 1988 as part of the British Columbia Seabird Colony Inventory Program. All colonies of burrow-nesting species were surveyed. A few small gull colonies were not visited. Total or partial counts were made for surface-nesting species and small colonies of burrow nesters. Burrow densities on larger storm-petrel and alcid colonies were estimated using systematic sampling along strip transects or within quadrats surveyed along line transects. Burrow occupancy rates were not obtained at small storm-petrel and alcid colonies, and population estimates were based on median occupancy rates at other colonies in the province"--Abstract, p. i. Issued also in print format. Includes abstract in French. Sea bird populations Bird surveys Pacific Coast (B.C.) Lemon, Moira J. F. Canada. Environment Canada. Canadian Wildlife Service. Pacific and Yukon Region. Technical report series (Canadian Wildlife Service) no. 121. (CaOODSP)9.504438 PDF 9.74 MB https://publications.gc.ca/collections/collection_2018/eccc/cw69-5/CW69-5-121-eng.pdf