With sunflowers, they are planted early enough so that if there is some kind of crop failure, you can follow with millet - so I will also have about three or four acres of millet to go with the flowers. I have found, at least at my place, you can have ten acres of millet and or sunflowers - and you might have a barrel burner shoot and you might not see one. Last year, I had ten acres of millet and did not see one. The year before, ten acres of millet and fast and furious. I always have a lot of doves early Aug - they dont always stay until early Sep and I have not figured out how to convince them to stay.