Animals: Choking Ducks

When great numbers of dead & dying wild ducks were found drifting forlornly on the lakes of Alberta, the Calgary Fish & Game Association was inclined to blame alkaline water, summoned the University of Alberta's Professor William Rowan and two other naturalists to investigate. Professor Rowan & associates quickly exculpated the water. They described, in a report made public last week through a U. S. game protection association, an uglier cause—leeches. The Rowan report implied that food scarcity this year interferes with the duck's good sense: "Undoubted catfee of the enormous...

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