Keep Out? Why?

The horse with the long flowing mane - blipped as an extra before - was seeking out the only bit of shade in his field this morning - despite the owners best attempts to keep it out!

When I first saw it it was squeezed up under the 'porch' (at least the head and neck were) and as we approached it turned and tried to walk towards us but had its hooves tangled in the webbing. It did eventually get free, having uprooted the remaining posts, and wandered across and spent ages having a nose rub from me!