I'd suggest you hold off until you get the okay from someone knowledgeable about meds for geese. I have never wormed my geese.

Geese can get parasites but I don't think it is all that common. And their naturally high body temperature (I think it is something like 104 degrees Fahrenheit) helps them to fight off infections.

My biggest fear in your situation would be "hardware disease" - the ingestion of foreign objects such as nails, staples, pieces of glass etc. Geese are incurably curious and will nibble just about anything.

Do you provide grit for your geese? It is supposed to help keep them swallowing foreign objects by satisfying the need to have grit for their gizzards.

Is her poop normal and plentiful? Keep an eye on her... I do hope she is okay.

Another thought: has anything in her world happened to upset her? Loss of a companion or changes in her range/housing/feed/caregivers? Geese are a lot more emotionally sensitive than one might think... and they do grieve and fret when unhappy changes occur.

I worm all of my birds twice a year, spring and fall, with ivermectin, including the geese. Parasites are just as common in geese as in any other livestock. You've got to be careful with piperazine. It is a very safe wormer, but the dosages given are calculated for poultry. Waterfowl drink much more, but who knows exactly how much? Is it twice as much, so you make it half strength, or 3 times as much? You just can't calculate the proper dose. Hardware disease is a possibility, but so are many other things. You're just playing a guessing game if you start treating her for things you're unsure about, all the while wasting time. If it's not worms or coccidia, it may be too late by the time you realize that. The best thing for her would be to try to locate a veterinarian who has some experience with waterfowl. NO ONE can diagnose anything over the internet.

"NO ONE can diagnose anything over the internet."

You're absolutely right, Patrick, that a vet's diagnosis would be the best thing.

Thanks for clarifying the issues surrounding the worming of waterfowl.

IS THERE a treatment for hardware disease? I have not heard of any and would be glad to know.

I took my Gracie in to the bird vet this morning. She said she looked okay, and gave me some corrid to put in her water for coccidia and also an antibiotic because she said she had a lot of bacteria in her droppings. I am to bring her back in 4 days if she is not better. She said the piperazine was fine to use and a good first step. Gracie was so good and patient at the vet, that everyone there wants to get an American Buff because she was so gentle. Her mate George, is a sweetie too. He is to receive the antibiotics as well in their water.
Thanks for all the input. I have had birds for 25 years, and I am not haphazard about their medications.

Buffs really are very gentle and sweet. I hope Gracie is feeling better soon.

"IS THERE a treatment for hardware disease? I have not heard of any and would be glad to know."

Surgery or euthanasia.

Thanks, Patrick. That's about what I figured. :(

Nails and staples, not good. Glass is just another rock to a bird's gizzard.