//Oxfam also does ads about giving a pig or duck to someone overseas. To eat.//

Give a man a duck and you feed him for a day. Teach a man to organically farm his own healthy, eco-friendly vegetables and he'll starve to death when they get decimated by a fungal blight and insects.

and his duck.
Aspergillosis
This condition occurs when ducks inhale spores produced by the mold (fungi) Aspergillus (Aspergillus fumigatus is the common species) that grows on damp straw or feed.

Aflatoxin poisoning
Molds (fungi) that grow on cereal grains and oilseeds .. Aflatoxins are produced by the molds Aspergillus flavus and Aspergillus parasiticus. Ducks are highly susceptible to these toxins. Very small amounts will cause high mortality.

These can be sold as organically dead for foreign tourists.