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Ingvar Byrkjedal, Nest Predation in Relation to Snow-Cover: A Possible Factor Influencing the Start of Breeding in Shorebirds, Ornis Scandinavica (Scandinavian Journal of Ornithology), Vol. 11, No. 3 (Dec., 1980), pp. 249-252
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Ingvar Byrkjedal (1980) studied this question.
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