. . . . "Birdwatchingwatching : one year, two men, three rules, ten thousand birds" . . . . . . "Birdwatchingwatching one year, two men, three rules, ten thousand birds"@en . "Birdwatchingwatching one year, two men, three rules, ten thousand birds" . "Diaries"@en . . "Electronic books"@en . . . . . . "Ornithologues." . . "Oiseaux Observation." . . . .