Hi All!
Portland Design Works (PDW) is located in Portland, Oregon USA about 116mi/186km up the Willamette Valley from me.
They're expanding their line of products, and I saw one that looks most appropriate for Thorn Ravens, though it is more like a swallow or a swift. Available in silver or black, it might appeal:
https://www.ridepdw.com/goods/cargo/the-bird-cageI presume one could bend the wings to better retain the bottle on rough roads. Thought it might appeal especially to Matt, who has named his Raven "Old Bird".
I have no interest, financial or otherwise, beyond it catching my eye.
All the best,
Dan. (...who is intrigued to find a bird *as* cage rather than bird *in* cage)