Motus was used to determine the effect of fuel load on migration; on spring migration Gray-Cheeked Thrush with higher fuel loads migrated faster, stopping less often to refuel, than birds with lower fuel loads.
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Motus was used to determine the effect of fuel load on migration; on spring migration Gray-Cheeked Thrush with higher fuel loads migrated faster, stopping less often to refuel, than birds with lower fuel loads.