The 20 UK garden bird dataset offers 3000 images across 20 classes, with 150 images per species. Two image subtypes; with and without background, are split into 20 subfolders containing 75 images per species, and all images are of shape [224, 224, 3] in jpg format.

The House Sparrow, Starling, Woodpigeon, Blackbird, Robin, Goldfinch, Great Tit, Collared Dove, and Dunnock contain a mix of original camera trap images supplemented by images capture from the internet. The remaining species contain images exclusively capture from the internet.