Returning to BBH on the A15 today (Mon) from a successful trip for Spotted Flycatchers at Fillingham Lake, just N of Lincoln (see other post), I had to pass Riseholme College.....so I called in to check the progress of the chicks which had been in the nest (with lots of wing-flapping) when I last visited on Sat 6th August. From the lack of any activity at the nest site or in the immediate vicinity, it was soon clear - as expected - that the remaining chicks had fledged.
However, wandering around and then looking across the road from the general nest site area, I caught sight of the Sp Fly adults which were repeatedly perching on numerous wires crossing the garden of " Beck Cottage " before launching their flycatching forays. I noticed that one adult was flying into an ornamental berry tree with its beakful of insects whereas the other adult was departing in the opposite direction with its insect load. Clearly the young were scattered around.
So, Ian, we know for sure that, at least, this Riseholme brood escaped the clutches of any predator to survive to fledge and fly the nest.
Freddy