All the images in this folder are in the public domain unless otherwise specified.
The subfolders have their own license.txt.

bird.png
carton.png
valkoparta.png
are used under licence from Shutterstock (https://www.shutterstock.com/)

glider.png
horse.png
are used under licence from the Noun Project (https://thenounproject.com/)

hidden1.png
is a scrambled version of a photo by Duane Wessels; it’s available under CC:
http://creativecommons.org/licenses/by-nc-sa/3.0/

kid.png
is an edited version of a photo by Antti Sorva; it’s used with permission.

llama.png
is a photo by Juha Sorva. Feel free to use it for anything.

