Meaning: This sentence describes the cheerful and lively sound of birds singing in the morning, creating a sense of joy and optimism.
Choice of Words: "Birds" are warm-blooded vertebrates that have feathers and lay eggs. "Chirp" means to make a short, sharp sound. "Morning air" refers to the air during the early part of the day. When you put them together, "Birds chirp in the morning air" describes the sound made by birds as they communicate with each other or sing during the morning.