it has to be serendipity
had I got this website together with more alacrity I probably could not have posted any 'pecker images for, although I have a good number of GSW pictures, they're all totally .......
for me it was another of those 'one day' birds, as in 'I'll get some pictures one day'. They are so shy. I hear them, I will stalk as close as possible, peer up through the branches, and often rain, and just before I can get an angle they're off, usually to settle nicely in sight but miles away. When one flies close it will invariably settle around the back of a tree, and then of course climb out of sight so it can re-appear 10 metres above (or below!) where you're expecting it might, and by the time you adjust there are leaves in the way .... and then... it's off.
I am not the first person to experience this of course. Thomas Bewick (1826) says "It creeps with great ease in all directions upon the branches of trees, and is with difficulty seen, as it instantly avoids the sight behind a branch, where it remains concealed". I'm convinced their parents teach them just how to piss photographers about from the moment they hatch.
anyway, that 'one day' came, sitting quietly and hoping a generous safe distance from where I knew they nested I caught sight of mum with her kid flitting about, she was leading him around, he dutifully paying attention as she explained just how to treat photographers. Despite not being in a hide however this time they were mostly oblivious of my presence..... perhaps she was preoccupied showing her child where food really comes from.
Anyway, this is mum, remember the colours for ID? no red head markings is a female, males have red patch to back of head, a red forehead is a juvenile.