Superb Fairy Wrens share a meal

Hi all,
These photos come with a little story which you might enjoy.  
Yesterday morning the male was feeding one of his offspring, dropping a tasty bit of cheese right into it's beak, but suddenly took it back, much to the disgust of the little one - for crying out loud!! Look at that objecting open beak - the unfairness of it all! . 
Reason being another of his offspring suddenly decided it was hungry too and flew in to collect it's share of the meal, and father dear father had actually quickly picked it back out of the beak of the first one and offered it to the fly-by! Talking about favoritism! 
Photo no 2 was taken straight after and obviously one little wren was not happy! 
I also wondered if there was already a little bit of blue showing in the tail of the right-hand one, maybe another male??.., or are they too young to show colour?  
Cheers,
Annette