Here's a breakdown of the key differences between the two images:

*   **Number of Birds:** The original has two birds; the synthesized image has three.
*   **Mountain Detail:** The original shows blurry, indistinct mountains, while the synthesized image presents sharper, more defined peaks and ridges.
*   **Sky Appearance**: The original has a cloudy sky, whereas the synthesized image has a clearer, less textured sky.