sidknee wrote in post #19518640
They stop being dependant on parents at around three months which is around the time they will disperse to find their own territories. Bear in mind that tawny owls in general are fiercely territorial so the youngsters probably do have some encouragement to make themselves scarce!

Probably yes. 
It’s interesting though. Take your common coot. These birds are very territorial and will fight any other coots stepping over their threshold. But they are very caring parents. When the chicks are small the parents’ whole countenance changes. I find it quite moving. Anyway, the young from a first brood will help raise the young from subsequent broods. Which, for a fiercely territorial bird is maybe remarkable.
Herons on the other hand, who are not territorial (they just don’t tolerate other herons in their personal bubble) become downright hostile to their offspring once they have fledged.
sidknee wrote in post #19518645
Yay, I knew you would, that's nice timing too, with the wings and tail spread and the prey about to be caught. The magic window wins again and now with the super new cam you'll be unstoppable!!

BTW the first swifts back here have occupied one of the nest boxes and were back and forth today with bits and pieces for their nest

Knowing that the Swifts are back, I went to a location in the harbour, close to my home. There are a few big, old, stately buildings where both House Martins and Swifts breed. I go there every year. So I went there yesterday and sure enough, the Martins have arrived; the sky is filled with them. And there were a number of Swifts flying by too. I came home with a number of really nice pics. Except I can’t process them as my Mac is too old. I have tweaked that Mac Pro to its limit but I can’t access the new camera’s raw files. I also can’t use DPP or Adobe’s DNG converter as it requires a version that my Mac doesn’t meet system requirements for. The R6 was the last camera my OS (Mojave) could handle.
I have tried several image viewers and converters and none do a good job. All of them convert the files to 8 bits, some convert to a lesser resolution, some gave me purple tiffs because they can’t read the embedded colour profile.
Houston, I have a problem.