This video from the USA says about itself:
First Cornell Hawks Fledge of 2014. June 6, 2014.
At 8:05AM EDT, the first nestling, E2, fledged a little earlier than expected!
On a blustery morning the young bird walked out to the ‘fledge ledge’, where we have seen juveniles from previous years fledge. After standing on the ledge for a while the nestling stretches its wings and loses balance. Sweeping under the nest platform the hawk glides towards Weill Hall, coming to a safe stop on a window sill with its back against the window. It then manages to grab hold of the edge of the window sill as it tumbles forward. After hanging from the ledge for a few moments of suspense it manages to flap up safely on to the sill where it stays. The bird appears to be fine, with no injuries as it stretches out its wings and begins preening. It is likely to stay there for a while and will probably be visited and fed by the parents.
Watch the Hawks live at http://allaboutbirds.org/cornellhawks.
See Newly Hatched Osprey Chicks on Live ‘Critter Cam': here.