Fig. 3From: Foraging behavior of the Greater White-fronted Goose (Anser albifrons) wintering at Shengjin Lake: diet shifts and habitat useThe time budget of foraging behaviors related to the food density in each stage (a1, a2, a3 early winter, b1, b2, b3 middle winter, c1, c2, c3, c4 late winter)Back to article page