.... or like this: first one is typical juvenile, second one is in transition to adult. Follow the link from Click to see how to separate both species when juveniles. I don't think you should pay attention to the red eyes, especially in the transition- it may come slowly... Oh, and the yellow and black bills - I don't know ! Juveniles are more difficult to separate, at least for people who have never seen one of the species (like me )!
You have nice shots anyway!