After
another long stint of incubating, Rosie has decided that she wants to
stretch her wings.
Before
she has actually left, along comes Will.
Rosie
immediately guesses that he has come to feed her, and here you can see her
beak open, presumably as she asks for the food.
Will
leans forward ... 
... and feeds her!
The
job done ... 
... Will flies off ...
... immediately followed by Rosie!