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On the effects of extreme cold on birds


, : On the effects of extreme cold on birds. British Birds 20(10): 253-254

[long dash]In outdoor aviaries in Alberta, winter temperatures descending to 35[degree] below zero F. have scarcely any detrimental effect upon Junco hyemalis, Zonotrichia leucophrys gambeli, Z. albicollis, Passerculus sandwichensis alaudinus, Spizella monticola ochracea, and the domestic canary.

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