I wish someone would come up with a clear guide. This picture thing seems to suggest a scarecrow is enough to keep wild birds off your free range section but how many smallholdings with free ranging birds for all or part of daylight hours, don't have trees, bushes and puddles, and how do you police wild bird poo on a 10 or even 1 acre range with any real success? Neighbour 1 has bird feeders out over a fence from me. Neighbour 2 has been releasing young pheasant and partridge throughout the lockdown, many of which end in my garden/fields because they don't get shot there. Neighbour 3 has ducks and hens and is half way between me and a loch frequented by swans, geese, ducks and all kinds of overhead flying results.
Free range isn't just commercial penned areas with staff to patrol, the backyard keepers get a lot of flak for non compliance but the guidance is so messy and the advice given by government officers so variable that it is a wonder anyone risks anything as the fines and criticism are the only certainties, not how to actually manage a real life smallholding with laying birds on it!
Mine are still penned and I'm seeing advice that they can be let out but I daren't take it in case the interpretations or government guidance is wrong. I just want to open the gate and see birds actually range free again, before April ideally!