California guides
Everything here is built from California's own records — 69 native plants, 24 birds and 4 dark-sky places, and the timing that goes with them. The free California pages stay free; these are the printable editions.
California Nature Year 2027
Everything Birch Compass knows about a year of nature in one state — the book, the posters, the sky calendar, the life list, and a weekly note through 2027.
- 65 pages book
- 11 files
- weekly California note
$34.00
The California Nature Journal
Twelve printable month pages: a reference side built from public nature data for your state, and a field-notes side that is yours.
- 15 pages
- twelve month pages
- printable PDF
$14.00
Birds of California
The state's most-recorded birds, ranked from survey data, with when each is present through the year and a life list to keep.
- 6 pages
- 24 species
- printable PDF
Not on sale yet
Native Plants of California
The native plants that belong in your yard — what to plant for pollinators, by zone, with bloom timing and a species table.
- 11 pages
- 69 species
- printable PDF
$9.99
The Night Sky over California
A stargazing companion for the state that does not expire: the meteor calendar, the darkest places, and how to read any year's sky.
- 8 pages
- 4 dark-sky places
- printable PDF
$9.99
Not sure yet? The free California pages cover this month on screen, and every edition here is the year around them.
Format: PDF, laid out for Letter and A4. Delivery: an instant download link, plus a link you can re-open for 72 hours. Refunds: full refund within 30 days, no questions — email hello@birchcompass.com.
Two at a time
Buying more than one California edition
Each California edition is sold on its own, and checkout takes one at a time. These two combine them into a single purchase, for less than the parts come to.
The California Set
Three printable California editions in one purchase — the twelve-month journal, the native plants reference and the stargazing guide — for less than the three cost apart.
The California Nature Journal, Native Plants of California and The Night Sky over California
$29.00 $33.98 apart
California Nature Year 2027 + Journal
The complete California Nature Year with the undated journal beside it: everything the site knows about the year, and the pages to record your own.
California Nature Year 2027 and The California Nature Journal
$42.00 $48.00 apart
Choosing
Which California edition do you want?
- If you want one thing that covers the whole California year
- The Nature Year is the book plus the posters, the sky calendar, the life list and a weekly note — everything the site knows about California in one purchase, which is why it costs what the others cost together.
- If you want to keep your own record
- The journal gives each month a reference side built from California data and a blank side that stays yours. Undated, so you print it again next year.
- If the birds are the reason you go outside
- The birding guide profiles the 24 species most consistently recorded in California, with a month-by-month presence chart and a life list.
- If you are planting something this year
- The native plants guide covers 69 species for hardiness zones 5a–10b, with bloom windows and what each one feeds.
- If you would drive somewhere dark
- The night sky guide names California's 4 darkest places and works the moon into every meteor peak, so you know which nights repay the trip.