Female (note no red on forecrown) Grey-headed (aka Grey-faced) Woodpecker Picus canus. This superb photo taken in the Bukk Hills, Hungary, by Laszlo Nehezy.
Male (note the red crown) Lesser Spotted Woodpecker Dendrocopos minor. This is by far Europe's smallest picid. Photo taken in the Bukk Hills, Hungary, by Laszlo Nehezy.