We're really hoping that this picture is a happy, innocent snap of an adventurous young woman climbing up to say hello to some adorable chicks, and not something more sinister. As we've already said, Woodstock was on a working farm, and as well as cows, there were also chickens who called it home - chickens who had babies.
It looks like the farmer may have gone to some lengths to keep the chicks away from revelers, but this girl wasn't to be deterred, climbing up to have a better look. She has a smile on her face, which suggests she's impressed by their cuteness. There's a whole other way of interpreting this picture, which is in the context of the food shortage, and the festival having a readily available set of eggs and available meat on hand for anyone who wanted to climb up and get them. But we don't want to think of it that way.