Arizona has this:
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A. For the purposes of this Section, the following definitions apply:
1. "Eyas" means a flightless raptor that is found in the nest and is dependent upon a parent bird for food.
3. "Passage" means a raptor in immature plumage, capable of flight and able to hunt and obtain its own food, and which is less than 1 year of age.
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It seems strange to me that most states don't have a definition for inbetween these two. I'm pretty sure you could argue that if it doesn't fit the "passage" definition, then it must be an eyas. At least, that's what I would argue.
Michelle M., Fort Thomas, AZ.