Following are all the shellduck like words, in the list below.
SHELDDUCK
100% like shellduck
SHELDUCK
100% like shellduck
SHELGOOSE
100% like shellduck
SHELDRAKE
100% like shellduck
COMMON SHELDUCK
100% like shellduck
SHIELDUCK
100% like shellduck
SHELDGOOSE
100% like shellduck
RADJAH SHELDUCK
100% like shellduck
RUDDY SHELDUCK
100% like shellduck
BERGANDER
100% like shellduck
DABBLING DUCK
100% like shellduck
BURDEKIN DUCK
100% like shellduck
DUCK
100% like shellduck
BLACK-HEADED DUCK
100% like shellduck
BARGOOSE
100% like shellduck
DUCKLING
100% like shellduck
HARELD
100% like shellduck
SHUFFLER
100% like shellduck
MALLARD
100% like shellduck
WATERFOWL
100% like shellduck
FRECKLED DUCK
100% like shellduck
WILDFOWL
100% like shellduck
TREE DUCK
100% like shellduck
SEA-PHEASANT
100% like shellduck
SHOVELER
100% like shellduck
WHEW DUCK
100% like shellduck
DOMESTIC DUCK
100% like shellduck
DUCKLET
100% like shellduck
SEADUCK
100% like shellduck
TORRENT DUCK
100% like shellduck
STEAMER DUCK
100% like shellduck
VULPANSER
100% like shellduck
GADWALL
100% like shellduck
MUD DUCK
100% like shellduck
DUCKBILL
100% like shellduck
WOOD DUCK
100% like shellduck
MULARD
100% like shellduck
GARGANEY
100% like shellduck
SHADBIRD
100% like shellduck
WHISTLING DUCK
100% like shellduck
STIFFTAIL
100% like shellduck
TUFTED DUCK
100% like shellduck
SPOTTED WHISTLING DUCK
100% like shellduck
SARCELLE
100% like shellduck
BUFFEL DUCK
100% like shellduck
CHESTNUT TEAL
100% like shellduck
PERCHING DUCK
100% like shellduck
DUCKKIND
100% like shellduck
QUAIL DOVE
100% like shellduck
PLUMED WHISTLING DUCK
100% like shellduck
STEAMER
100% like shellduck
OUSEL
100% like shellduck
AMERICAN WIDGEON
100% like shellduck
GUCKLING
100% like shellduck
SCOTER
100% like shellduck
OLDSQUAW
100% like shellduck
STIFF-TAILED DUCK
100% like shellduck
HOTTENTOT TEAL
100% like shellduck
BUSHSHRIKE
100% like shellduck
RUDDY DUCK
100% like shellduck
BROADBILL
100% like shellduck
OOZEL
100% like shellduck
TURTLE-DOVE
100% like shellduck
AMERICAN BLACK DUCK
100% like shellduck
PINTAIL DUCK
100% like shellduck
MOTTLED DUCK
100% like shellduck
BUTTON-QUAIL
100% like shellduck
WATER HEN
100% like shellduck
MARSH HEN
100% like shellduck
HARLEQUIN
100% like shellduck
KING EIDER
100% like shellduck
DOUCKER
100% like shellduck
BLUE DUCK
100% like shellduck
MOTTLED MALLARD
100% like shellduck
PINTAIL
100% like shellduck
GUINEA-FOWL
100% like shellduck
PINK-EARED DUCK
100% like shellduck
EURASIAN WIGEON
100% like shellduck
MOORHEN
100% like shellduck
SEA BIRD
100% like shellduck
WANDERING WHISTLING DUCK
100% like shellduck
LESSER WHISTLING DUCK
100% like shellduck
GOOSE
100% like shellduck
GUINEAFOWL
100% like shellduck
NORTHERN SHOVELER
100% like shellduck
GREY TEAL
100% like shellduck
SAND GROUSE
100% like shellduck
DUCKPOND
100% like shellduck
NEW ZEALAND SCAUP
100% like shellduck
WIGEON
100% like shellduck
DOTTEREL
100% like shellduck
RING-NECKED DUCK
100% like shellduck
MERGANSER
100% like shellduck
SHEERWATER
100% like shellduck
EASTERN CURLEW
100% like shellduck
DIVVY DUCK
100% like shellduck
CANVASBACK
100% like shellduck
WHITEBACK
100% like shellduck
SIFTER
100% like shellduck
SOUTH-SOUTHERLY
100% like shellduck