My rooster is coming up on 5 mths old and he's always gone nuts for blueberries. Personally, I never thought the day would come that he'd even stop trampling and barreling through the others to get as many as he could lol. Tonight I threw them some and he excitedly called everyone over, his little head bopping down to each berry he saw showing the hens exactly where they were. Our hen who is lowest in the pecking order was standing a ways away and he picked up a blueberry, doing his muffled treat call, went right over to her and dropped it in front of her. He's growing into a fine young roo in all respects
