. The Canadian field-naturalist. 1998 GffiSBRECHT AND ANKNEY: BIRDS AT FEEDERS 671 ^ 2A 2B Feeder Figure 3. Proportion of total observations on seven bird species at each of during 34 thirty-minute observation periods from 17 October 1995 the six feeders to 22 January minute observation period (Range = 7-302 seeds). Regression analysis, however, revealed no relation- ship (P > ) between total seed consumption and either ambient temperature or wind speed. A total of 2172 observations of foraging birds was recorded. Blue Jays {Cyanocitta cristata). Mourning Dov
. The Canadian field-naturalist. 1998 GffiSBRECHT AND ANKNEY: BIRDS AT FEEDERS 671 ^ 2A 2B Feeder Figure 3. Proportion of total observations on seven bird species at each of during 34 thirty-minute observation periods from 17 October 1995 the six feeders to 22 January minute observation period (Range = 7-302 seeds). Regression analysis, however, revealed no relation- ship (P > ) between total seed consumption and either ambient temperature or wind speed. A total of 2172 observations of foraging birds was recorded. Blue Jays {Cyanocitta cristata). Mourning Doves {Zenaida macroura), Rock Doves (Columba livia), and European Starlings {Sturnus vulgaris) were rare visitors to the feeders, and were dropped from all analyses (Table 1). House Sparrows were by far the most frequent visitors to the feeders, followed by Northern Cardinals, House Finches, White- 50 45 40 0 35 m .s 1 30 a u •a 8 25 o S 20 1 5 - 0 \- AB if^ ill lA IB 2A 2B Feeder 3A 3B Figure 4. Mean (± SE) number of seeds consumed at each of the six feeders during 34 thirty-minute observation periods from 17 October 1995 to 22 January 1996. Bars with dissimilar letters are different (P < ).. 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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