00000nam 2200000za 4500 9.856520 CaOODSP 20241203113643 cr ||||||||||| 180514s1987 onc #ot f|0| 0 eng d 0-662-15666-8 0831-6481 CaOODSP eng eng fre n-cn-on CW69-5/31E-PDF Blancher, Peter J. 1954- Diet of nestling Tree Swallows (Tachycineta bicolor) near Sudbury, Ontario, summer 1986 [electronic resource] / Peter J. Blancher ; Caren L. Furlonger ; Donald K. McNicol. [Ottawa] : Canadian Wildlife Service, Ontario Region, 1987. ii, 14 p. Technical report series ; no. 31 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographic references. "We present some preliminary information on the diet of nestling Tree Swallows (Tachycineta bicolor) northeast of Sudbury, Ontario in 1986. Flies (Diptera) comprised nearly half of the diet items, but aphids (Aphididae), mayflies (Ephemeroptera), dragonflies and damselflies (Odonata), beetles (Coleoptera), and ants and wasps (Hymenoptera) were also important in the diet. Close to half of prey items were aquatic in origin. Of these, mayflies and mollusc shells were more prominent in the diet near wetlands of relatively high pH, than near wetlands of lower pH. Aquatic prey were of larger average size than terrestrial prey. The relative merits of several diet collection methods are discussed"--Abstract, p. i. Includes abstract in French. gccst Migratory birds Furlonger, Caren L. McNicol, Donald Keith, 1954- Canada. Environment Canada. Canadian Wildlife Service. Ontario Region. Technical report series (Canadian Wildlife Service) no. 31. (CaOODSP)9.504438 PDF 688 KB https://publications.gc.ca/collections/collection_2018/eccc/cw69-5/CW69-5-31-eng.pdf