Monitor for internal and external parasites regularly

Check ducks monthly for external parasites (mites, lice) by examining the feathers around the vent and under the wings. Monitor droppings for signs of internal worms — visible worms, unusually loose or bloody droppings, weight loss despite good appetite, or a drop in egg production. Submit a fecal sample to a veterinarian annually for a worm egg count, which identifies the specific parasites present and guides treatment.

Why It Works

Ducks are less susceptible to external parasites than chickens because regular swimming drowns mites and lice. However, ducks that lack adequate swimming water or live in crowded conditions can still develop infestations. Internal worms (roundworms, gapeworms, tapeworms) are more common and enter through contaminated soil, water, or intermediate hosts like slugs and snails. Fecal testing identifies specific parasites so treatment can be targeted rather than indiscriminate.

Tips

• Check around the vent area at night when mites are most active
• Rotate pasture areas every 2–4 weeks if possible to break parasite lifecycles
• Avoid treating with dewormers "just in case" — overuse drives resistance; use fecal tests to confirm
• Common waterfowl dewormers include fenbendazole (Safe-Guard) — always consult a vet for dosing
• Good sanitation and clean swimming water are the best parasite prevention