We start with Suzie (I think) sitting on the chicks in Box2.
To me, the surprising thing about what is happening in Box2 is that the two females (and the male) are co-operating so beautifully in the bringing up of their chicks. Although at one stage there seemed to be some antagonism from one of the females, now that the pressures of finding sufficient food for them all are clear, this seems to have disappeared. The following sequence shows how they now fully co-operate with each other.