4K HD Wallpaper: Seagull Portrait
Jeffrey Betts is the photographer and from his courtesy the image was shared under CC0 license. Download from here if you'd like to use in your desktop background, homescreen phones, blog articles, webdesign projects, social media, content marketing...
Widescreen Desktop / Macbook (Retina): 2880x1800 (fits on: 2560x1600, 1920x1200, 1440x900)
High Definition HD 1080p: 1920x1080 (fits on: 1600x900, 1366x768, 1280x720)
Samsung Galaxy Tab & iPad: 2048x2048 (compatible with many tablets)
HTC, Samsung Galaxy & iPhone: 1080x1920 (compatible with many phones)