What are you looking at? Who am I?

I think this is a young coot (cootlet?) as it and its siblings were with a grown up coot - but its beak is the wrong colour! Can anyone confirm the identity of this young bird?

I promised a change from Flame today, but you nearly got her again - sitting in thick mud this time!
Also have a reasonable heron picture from our (I went with Mic and Flame) walk this afternoon, but this little fella won the day!