Song by Jayster: https://jayster.bandcamp.com/track/sunrise-to-sunset

Sea backdrop by Pixel_Salvaje  https://pixel-salvaje.itch.io/parallax-backgrounds-pixel-art
Plane by Bert-o-Naught https://opengameart.org/content/red-biplane
Bird by rmazanek https://rmazanek.itch.io/bird-small