This example generates a full-screen SVG scene of a daytime landscape with a gradient sky, sun, land, birds, and a tree, all created programmatically using the DOM API `document.createElementNS` for the SVG namespace. The sky and sun use `linearGradient` and `radialGradient` elements with animated `stop` colors and offsets, cycling through a 24-second day-night color loop to simulate sunrise and sunset. Birds are constructed from SVG paths and positioned with CSS transforms, while the land and tree use predefined shape attributes. The animation relies on SVG `<animate>` elements and CSS keyframes to update colors and rotations continuously without any external charting library.