How does the overall appearance of the Whimbrel change when shifting to wintering grounds?

Answer

The overall appearance becomes paler, with dark markings softening

Plumage presentation varies significantly between breeding and non-breeding seasons. When the Whimbrel transitions away from its breeding phase and moves towards its migration routes or wintering grounds, the vivid intensity fades. In this non-breeding state, the bird's overall coloration tends to become paler, and the sharp definition of the dark markings visible during the breeding season softens considerably.

How does the overall appearance of the Whimbrel change when shifting to wintering grounds?
birdphysical characteristicwhimbrelwader