| Subject | English | Irish |
| environ., nat.res. | black-bellied whistling-duck | feadlacha tharrdhubh (Dendrocygna autumnalis) |
| life.sc., environ. | black-billed Whistling Duck | feadlacha na nIndiacha Thiar (Dendrocygna arborea) |
| life.sc., fish.farm. | Bombay-duck | bumaló (Harpadon nehereus) |
| nat.sc., agric. | comb duck | lacha chuircíneach (Sarcidiornis melanotus) |
| nat.sc., health., anim.husb. | duck plague | eintríteas víreasach lachan |
| nat.sc., health., anim.husb. | duck viral enteritis | eintríteas víreasach lachan |
| nat.sc., health., anim.husb. | duck virus enteritis | eintríteas víreasach lachan |
| health., anim.husb. | duck virus hepatitis | heipitíteas víreasach lachan |
| nat.res. | ferruginous duck | lacha mheirgeach (Aythya nyroca) |
| nat.sc., agric. | fulvous whistling duck | fead-lacha odhar (Dendrocygna bicolor) |
| nat.sc., agric. | Hartlaub's duck | lacha Hartlaub (Cairina hartlaubi, Pteronetta hartlaubii) |
| life.sc., environ. | knob-billed duck | lacha chuircíneach (Sarkidiornis melanotos) |
| nat.res. | Laysan duck | pras-lacha Laysan (Anas laysanensis, Anas platyrhynchos laysanensis) |
| nat.res. | muscovy duck | musc-lacha (Cairina moschata) |
| life.sc., environ. | Muscovy Duck | musc-lacha (Cairina moschata) |
| life.sc., environ. | pink-headed duck | lacha cheann-bhándearg (Rhodonessa caryophyllacea) |
| nat.res. | ruddy duck | lacha rua (Oxyura jamaicensis) |
| environ. | swans, geese and ducks A family of waterfowl, including ducks, gees, mergansers, pochards and swans, in the order Anseriformes | ealaí, géanna agus lachain |
| environ., nat.res. | West Indian whistling-duck | feadlacha na nIndiacha Thiar (Dendrocygna arborea) |
| life.sc., environ. | West Indian whistling duck | feadlacha na nIndiacha Thiar (Dendrocygna arborea) |
| environ., nat.res. | white-faced whistling-duck | feadlacha aghaidhbhán (Dendrocygna viduata) |
| nat.res. | white-headed duck | lacha cheannbhán (Oxyura leucocephala) |
| life.sc., environ. | white-winged duck | lacha bháneiteach (Asarcornis scutulata, Cairina scutulata) |
| life.sc. | white-winged wood duck | lacha bháneiteach (Asarcornis scutulata, Cairina scutulata) |
