NEWS | tl;dr version

Set your TTRPG campaign aflutter with these tips on how to add more birds to your games: bird familiars, companions, spies, and friends!

Learn about the science, magic, and folklore of falcons - and help support bird conservation!

Zoologist's Primer: Birds is now live on Kickstarter, and we couldn't be more proud to bring this book on bird folklore to your door! First of all, thank you all for the support of our campaign! In the first two days, over 1,700 backers have trusted us to deliver them another beautifully illustrated book on the folklore and magic of the natural world. Together we have raised over $150,000 for Zoologist's Primer: Birds and unlocked several stretch goals, including the first ro

Have you ever wished to have a digital library of the Primer books? If so, your dreams came true! (You haven't? Dream bigger—you deserve nice things in your life!) The Natural World Library App: your digital hub of our Primer books With The Natural World Library App, you can now browse Herbalist's Primer, Geologist's Primer, and the brand-new Mycologist's Primer without flipping 1080 pages by hand! And we promise that all future books in the series (like the upcoming Zoologis

We're hard at work on our fourth (!) Primer book, bringing together zoology, bird folklore, modern occult, and (as always) tabletop roleplaying! Want to know what we've been up to? See for yourself!

We're hard at work on our fourth (!) Primer book, bringing together zoology, bird folklore, modern occult, and (as always) tabletop roleplaying! Want to know what we've been up to? See for yourself!

We're hard at work on our fourth (!) Primer book, bringing together zoology, bird folklore, modern occult, and (as always) tabletop roleplaying! Want to know what we've been up to? See for yourself!

Anna's answering the burning questions about the upcoming bird book and the rest of the animal kingdom, tailor-made for your TTRPGs and worldbuilding.

Birds! Spaceships! Patreon! Excitement! This is a copy of the newsletter sent on 31st October 2025 As you may have noticed, we have restarted our newsletter! We've been quiet for a while. Last year was not kind to us on a personal / family level, and honestly, it took us until September to feel like we could finally take a breath. Recovering from stress and burnout takes time. Anyhow, here we are, back in business! This is where we are with all our projects Geologist's Primer

migrated from Substack. Originally posted on 17 January 2025 Hello, Dearest Subscribers, I feel like I'm starting every newsletter with: it's been a while. It has, though. The last year has been a very challenging year for us here at Double Proficiency. Lots of it were family matters about which I do not intend talking about on the wide-wide internet. It was a lot of hospital visits, therapy appointments, burnout, and a custody case to boot. Honestly, neither of us even had a

Mycologist’s Primer is coming to Kickstarter on 15th October! You can sign up to be notified about the launch on the pre-launch page . This time, we’re delving deep within the mycelium to explore the wonderful world of fungi: mushrooms, yeasts, molds, and related lichens (and completely unrelated but inexplicably fitting slime molds). On 360 pages we cover 100 real-world but fantastical species, give you a crash course in mycology, and toss at you hundreds of legends, myths,