Roger Pasquier,a 67-year-mature ornithologist, spends a good deal of time walking around with his eyes glued to the gutter, or because he thinks it’s the best spot to find loose change. Coin hunting isn’t a matter of casual observation for Pasquier; it’s a serious pursuit that nets him around a hundred dollars a year. Nicholas Thompson,editor of The current Yorker’s website, followed him for some pointers.
Source: wnyc.org