I downloaded 2400 profile pics by scraping http://www.facebookrandomusers.com, and then manually sorted them into the various categories. I came up with the categories to reflect the most salient features, e.g. whether they photo had a child in it, regardless of whether it had adults in it too.
The results are about what I would have predicted. Men are more likely to just show themselves, or some image that is not of a human being, or the default photo (presumably by an abandoned account), while women are most likely to show themselves with one other adult (who may or may not be a romantic partner), or a child.