Hi, love the design of these!
I would love to include them in my mobile game. The player would start with bluebirds in the background of their homescreen, however I would like to then offer the user to pay an IAP to swap the birds on their homescreen. Essentially swapping the birds in their garden.
Everything would still be in the app and the asset would never be distributed outside of the app, and you would also be credited.
Would you approve this use?