Abstract
WHEN a swan is rushing to the attack of an adversary, the head is lowered and the neck is protended almost horizontally. I had always associated this posture with mere anger, but, during the excessive Thames floods of last December, when swans could often be seen striving against the stream, sometimes, so far as could be judged, in the apathetic state of desperate exhaustion, the same pronation of the neck was frequently evident.
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ROWELL, H. Animal Mechanism. Nature 115, 302 (1925). https://doi.org/10.1038/115302c0
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DOI: https://doi.org/10.1038/115302c0
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