I noticed diarrhea the last couple days on my 3 turkey poults. I’ve had them since they were about 1 week old. They eat Purina game bird starter, 30% protein. They spend days out in the garden where there is plenty of shade and are indoors in a large dog crate at night. Found 1 lying dead next to his brother this afternoon. The other 2 were easier than usual to pick up and bring in. I’ve raised many chicks in this same garden area but none have been there for the last 2 years. Any ideas on cause would be appreciated.