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Ranked repeatability of feather corticosterone levels of 16 individuals across six feather types moulted during similar time periods (r = 0.15, F15,80 = 2.08, P = 0.02). Points represent mean feather corticosterone rank of the individual using measures from primaries P4 and P5, rectrix R1, secondary S1, tertial S8 and five pooled back feathers. Error bars represent 1 SEM, and the dashed line represents perfect repeatability.
