Tail feathers from a ruddy duck. This makes it clear why ruddies belong to a variety of ducks known as "stiff-tailed."
Rump feathers from drake pintail
Flank feathers from hen pintail
Secondary wing feathers (speculum) from hen pintail
Tertial wing feathers from drake pintail
Tail feathers from drake pintails
Covert wing feathers from drake green-winged teal
Secondary wing feathers (speculum) from drake green-winged teal
Tertial wing feathers from drake wigeon
Tertial wing feather from drake northern shoveler - doesn't usually emerge until mid- to late-winter.
Coverts from drake northern shoveler
Flank feather from drake northern shoveler
Tail feather from drake mallard - the lighting brings out the green in feathers that otherwise appear black.
Secondary wing feather (speculum) from drake mallard
Breast feathers from drake gadwall. Seriously! These come from the area where the dark scalloped feathers on the shoulders transition to the white feathers on the belly. Check out the story on these feathers here.
Covert wing feathers from drake gadwall
Tertial wing feather from drake gadwall
Speculum feather from a drake wood duck.
Breast feathers from a drake wood duck
Wood duck feathers
Feathers from the duck's rump - they just look black until you examine them one by one.