Birdwatchers in 1960s Hong Kong, in the words of my mother ‘would have looked at you gone out’ had you suggested that thirty years later a major site to see migratory birds was to be found in Hong Kong waters. It wasn’t until the late 1990s that the island of Po Toi was found to be a major stop-off point during the spring and autumn migrations. Since then ferryloads of birders have visited the island frequently in those seasons. Once off the ferry they only need walk a few yards to an old feng s