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Yes they are. A friend of mine who has Guinea Fowl was feeding her birds meal worms for protein. The mealworms were fed by a mulch pile with coffee grounds and her bird started having violent seizures, later determined to be caffiene related by a veterinarian. Here is a link to her story. http://www.guineas.com/anyboard9/forum/posts/68285.html

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17y ago

What else can I help you with?