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Foraging and fueling behavior of Bewick’s swans on the basis of infection status. (A) Bites per hour, (B) droppings per hour, and (C) accumulated fat stores (API); observed during their overwintering period, presented as means (thick horizontal bars) of residual values after accounting for effects of sex, age, year, date of observation, and field type (Supplementary Tables S5, S7, and S9).
