Taiwan is a beautiful island with abundant natural and environmental resources. Each winter, tons of migratory birds from colder northern areas fly to Taiwan’s wetlands for the warmer climate. These birds become the main residents of the wetlands, adding dynamic and exuberant vitality to the wildlife. After the winter, almost all the migratory birds return to the northern areas. However, some birds might stay. The reasons for them to stay are various, it could be because the birds have fallen in love with this island, but many are because of the injury. The protagonist of this book, the black bird, belongs to the latter category. Due to the injury, it can only wait patiently for its companions to come again. The artist, LIU, PO-LE, who has spent a long time observing wild birds in the natural world, has drawn the birds using delicate and precise strokes. When viewing his artworks, it seems LIU can understand what the birds are thinking. Each bird has its personality, some are cute, some are arrogant, some might be withdrawn, and some are compassionate. Through this book and the story of the black bird, LIU is reminding us, the wetlands are important and favoured places for many wild birds. To build a paradise for these lovely animals, we human beings all need to agree to obey the rules of nature, in the end, become the most trustworthy guardians for the paradise of wild birds.