I thought this article might interest you bird folks.
https://www.rei.com/blog/news/noah-...ynumpQyBysB3SO6eNnig1JtBbi19S5yxhjbz9qc3Eqpx0
https://www.rei.com/blog/news/noah-...ynumpQyBysB3SO6eNnig1JtBbi19S5yxhjbz9qc3Eqpx0