Rachel... Rachel... Rachel... (in the style of Sheldon from The Big Bang Theory...)
Have you seen this?
I think it might just tick every box for things we both like! Birds! Colouring in! Charley Harper! What more could you want? There are all sorts of his colouring-in books available, but I particularly like this one as it comes in a tin (gotta love a tin!), with cards, envelopes and crayons.
I know how much you enjoyed the Benedict Cumberbatch colouring-in book that I sent you, so I hope this makes you smile too. :)