Breakfast at the Osprey nest

All I saw was one of the daughters land to the nest carrying a large fish. The other (younger?) sister was there already.  Does it mean that the girls know how to fish? Does it maybe mean that the mother has migrated? Well, whatever the situation is, it was good to see these two in the nest even though the older one didn´t give anything to her sister. 
EXTRA. Once again I could see how they use their wings. When she was arranging her position as well as the place of the fish she was eating, she used her wings. They  a r e  handy!