Bird songs and calls: free native birdsong sound recordings
Bird Chirping Sound Effect - YouTube
Forest: Singing Birds (Nature Sounds for Relaxation, Meditation, Healing & Sleep) | Sounds of Beautiful World
Birds Singing Free MP3 Download | Mingo Sounds
Nightingale Singing Song (2020), Nightingale Singing MP3 Song Download from Wild Bird Sounds for Pets: Nature Music to Entertain your Cat Dog & Pet – Hungama (New Song 2023)