. The Canadian field-naturalist. 270 The Canadian Field-Naturalist Vol. 94. 0 10 20 30 km Figure 1. Location of the Wine-Zizania (50°30'N, 93°23'W) and Lac Seul (50°40'N, 92°40'W) study areas, and of the five weather stations. Methods Radio collars consisted of a two-stage transmitter and four D-size Mallory ZM 12 mercury batteries encased in a fiberglass canister with a leather covering (Addison 1973). Two brass strip antennae encased in leather formed a collar of adjustable length with a snap fastener. Each transmitter had a different emis- sion frequency and pulse rate. Collars were attache
. The Canadian field-naturalist. 270 The Canadian Field-Naturalist Vol. 94. 0 10 20 30 km Figure 1. Location of the Wine-Zizania (50°30'N, 93°23'W) and Lac Seul (50°40'N, 92°40'W) study areas, and of the five weather stations. Methods Radio collars consisted of a two-stage transmitter and four D-size Mallory ZM 12 mercury batteries encased in a fiberglass canister with a leather covering (Addison 1973). Two brass strip antennae encased in leather formed a collar of adjustable length with a snap fastener. Each transmitter had a different emis- sion frequency and pulse rate. Collars were attached to five adult females, three adult males, three yearling females, and two yearling males, during 28 h of helicopter flying between 24 June and 15 July 1972, using a method similar to that of Simkin (1963). Yearlings were identified by the size and appearance of the body and antlers, as described by Goddard (1970) and subsequently confirmed by Saunders and Williamson (1972). The collar was at- tached to one antler on Moose number 7 (M7), a large adult bull, because it was too small for the animal's neck. Animals were located from the air during 41 flights in a Turbo-Beaver aircraft between 14 July 1972 and 13 June 1973, usually between 10:00 and 14:00. A modified Cochran receiver (Cochran and Lord 1963) was used, with a whip antenna during the first four. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club
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