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Fig. 3. Year-round average weekly masses for 14 barnacle geese (grey circles) with
rates of oxygen uptake measurements (N=6 ± s.e.m.) at six
points of the year. Triangles represent night resting values and squares day
resting values. X error bars represent duration of sampling period. Both day
and night resting rates varied significantly throughout the year
(repeated-measures ANOVA, P<0.001 and P<0.004,
respectively) and followed a similar pattern. Black bar indicates the wing
moult period.