Flint Chicken (chickens:spawn_egg - 7363:0) has NBT data

{ChickenType:{id:"chickens:flintchicken"}}

TAG_Compound (10) ('')
{
    TAG_Compound (10) ('ChickenType')
    {
        TAG_String (8) ('id'): "chickens:flintchicken"
    }
}
