. The Canadian field-naturalist. 1964 Buckner: a Camera Recording Device 79. 1 2 3 4 5 6 7 8 9 10 11 N 13 14 15 16 17 18 19 20 21 22 23 M TIME () Figure 1. Number and time of photo-recordings of three species of mammals, in a tamarack bog, August 2-23, 1961. Encouraging results from the preliminary tests have warranted further improvements to the equipment. Reliance on line power has been eliminated by converting to battery operation. A re-designed model operates for about a week on a standard 6-volt car battery before recharging and at temperatures of 28° F or lower. Other improvements
. The Canadian field-naturalist. 1964 Buckner: a Camera Recording Device 79. 1 2 3 4 5 6 7 8 9 10 11 N 13 14 15 16 17 18 19 20 21 22 23 M TIME () Figure 1. Number and time of photo-recordings of three species of mammals, in a tamarack bog, August 2-23, 1961. Encouraging results from the preliminary tests have warranted further improvements to the equipment. Reliance on line power has been eliminated by converting to battery operation. A re-designed model operates for about a week on a standard 6-volt car battery before recharging and at temperatures of 28° F or lower. Other improvements in the electronic and flash equipment have reduced the incidence of premature and faulty exposures. Experiments are planned to improve identification of marked animals. The device promises to be of value in behaviour and population studies of small mammals, particularly during the winter when trapping techniques are less feasible. It may also prove useful as a supplementary means of obtaining seasonal population estimates of small mammals on permanent study plots. References Abbott, Herschel G. and Wendell E. Dodge. 1961. Photographic observations of white pine seed destruction by birds and mammals. Journal of Forestry ^9: 292-294. Dodge, Wendell E. and Dana P. Snyder. 1960. An automatic camera device for re- cording wildlife activity. Journal of Wild- life Management 24: 340-342. Pearson, O. P. 1959. A traffic survey of Microtus-Reithrodontomys runways. Jour- nal of Mammalogy 40: 169-180. VoisEY, Peter W. and W. Kalbfleisch. 1962. A mechanical treadle for the study of small mammal traffic in the field or laboratory. Journal of Mammalogy 43: 281. Received for publication 14 July 1963. 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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