 He mentioned that Hiss was a birdwatcher and had bragged about seeing a prothonotary warbler.In the hearing Richard Nixon asked Hiss about his hobbies, to which he replied tennis and amateur ornithology.McDowell interjected with a question as to whether Hiss had ever seen a prothonotary warbler, to which Hiss gushed in the hearing that he had indeed, seen one, and described it to the committee.