A sentence to praise pigeons is expressed as follows:

1. Pigeon, your white feathers are as pure as snowflakes, and your flight is the most beautiful scenery in the sky. Explanation: This sentence praises the appearance of the pigeon, especially its white feathers, and compares its flying posture to the most beautiful scenery in the sky, highlighting the beauty and elegance of the pigeon.

2. Pigeon, you fly gently, like a moving picture, which is fascinating. Explanation: This sentence compares the flying posture of pigeons to "a flowing picture", expressing the beauty and dynamic feeling of pigeons in flight, which makes people yearn for it.

3. Dove, you are the messenger of peace. Your existence fills the world with love and hope. Explanation: This sentence emphasizes the symbolic significance of the pigeon as a messenger of peace, links the pigeon's existence with peace, love and hope, and highlights the positive image of the pigeon.

4. Dove, your eyes are so gentle, as if you can see into people's hearts and bring endless comfort. Explanation: This sentence praises the characteristics of the pigeon's eyes, describing it as gentle and insightful, and emphasizing that it can bring comfort to people, highlighting the pigeon's affinity and warmth.

5. Dove, your singing is melodious and beautiful. It is the most beautiful harmony of nature, making people feel relaxed and happy. Explanation: This sentence praises the pigeon's song, describes it as melodious and beautiful, and compares it to the most beautiful harmony of nature, highlighting the beauty and sweetness of the pigeon's song, and bringing people a pleasant mood.