Wild-type hen
A variant of Mandarin duck (Aix galericulata)

Representative Mandarin duckphoto — a dedicated image of this exact morph isn't available yet.
Subtle gray-brown with a white eye-ring and trailing stripe; beautifully camouflaged for cavity nesting and very similar to the eclipse drake.
Keeper tips for this variant
Give the hen quiet, well-screened nest boxes a meter or more off the ground and don't disturb her once she sets; she is the incubator/parent, so plan housing around her privacy needs.