Photograph of a squirrel in a Forest Hills house courtesy of the Parks Department It's a walk-up, but the price is right. City squirrels are enjoying the goodwill of concerned citizens and the Parks Dept., who cooperated to install squirrel houses in City Hall Park. Mark Garvin had five of the boxes, which measure about a foot around, built with soft pine for several hundred dollars a piece--city real estate insanity extends to the......