Baby birds

 We had 2 little birds moved into the house on our house. They seem to like it there as they have decided to marry and raise their family. We haven't seen their babies yet but they must be growing the amount of yellow caterpillars they're eating. That Mum and Dad must be worn out all that flying backwards and forwards.
I wonder if the babies get sick of the same food all the time or are like me and quite happy as long as something different gets thrown in occasionally.

These aren't very brilliant pictures but the grown up is sitting on top of the house on one and you can see his/her bum disappearing inside on the other. They do fit honest.
Maybe there are 2 families in there even