From what I have read, no. DE can irritate the lungs and since birds stir up lots of dust while taking a dust bath, they can breathe in the DE, causing health issues.
However, we used DE on our dog when she was a puppy to keep her flea and tick free and it seems to have worked without any adverse effects. Of course, we sprinkled it onto her tummy and rubbed it into her fur so she wasn't breathing it in. Plus, dogs are not nearly as fragile as birds and have more mass than most birds, so they can withstand more physical stress.
I am not a vet, just a bird, dog and cat owner. Your mileage may vary but I won't risk it with my chickens and Guinea fowl.
From what I have read, no. DE can irritate the lungs and since birds stir up lots of dust while taking a dust bath, they can breathe in the DE, causing health issues.
However, we used DE on our dog when she was a puppy to keep her flea and tick free and it seems to have worked without any adverse effects. Of course, we sprinkled it onto her tummy and rubbed it into her fur so she wasn't breathing it in. Plus, dogs are not nearly as fragile as birds and have more mass than most birds, so they can withstand more physical stress.
I am not a vet, just a bird, dog and cat owner. Your mileage may vary but I won't risk it with my chickens and Guinea fowl.