Yes. No account, no email, no ads. Pick a place and download the PDF.

Where does the bird data come from?

Public, license-clean records from GBIF, the IOC World Bird List, USGS, and iNaturalist.

Does it work outside the US?

Yes. Every US state, plus countries, continents, and a global list — anywhere with bird occurrence records.

A birding tradition: count how many species you can see in one place over a calendar year. The same approach works for a Big Day, Big Week, or Big Month.

Can I customize my checklist?

Yes. Filter by season, common vs rare, and family before you download.

Big Year Bird Checklist for Colorado

A free printable Colorado bird checklist. Pick your goal, get the PDF.

Colorado's checklist climbs from shortgrass prairie to alpine tundra. The lek-displaying grouse of spring are the marquee targets of any serious Colorado list.

The tool builds you a printable checklist of every bird realistically possible in Colorado, grouped by family, with seasonal markers and a space to log the date you spot each one. It's drawn from public, license-clean records — not a generic national list, but the species that actually occur where you're birding.

Pick Colorado (or any area inside it), choose your goal — Big Day, Big Month, Big Year, or a life list — and download the PDF. Free, no account, no email. Print it, fold it in a field guide, and start checking birds off.

What you'll find on a Colorado checklist

A Colorado checklist mixes widespread residents with the specialties that make the state worth a big year. A few you'll want to target:

Greater Sage-Grouse — Iconic sagebrush lek display.
Gunnison Sage-Grouse — A range-restricted endemic.
Brown-capped Rosy-Finch — Alpine-tundra specialty.
White-tailed Ptarmigan — Above treeline year-round.
Lark Bunting — The state bird; prairie summer.
Mountain Plover — Shortgrass-prairie nester.
Dusky Grouse — Montane-forest grouse.
American Three-toed Woodpecker — Burned-forest specialist.
Lewis's Woodpecker — Open-pine flycatching woodpecker.
Broad-tailed Hummingbird — Trilling montane breeder.
Sandhill Crane — Massive San Luis Valley staging.
Mountain Bluebird — Open-country sky-blue.

Your generated PDF includes every realistic species for the exact area you pick, with seasonal markers and a space to log each sighting.

This is a preview. For your full printable list:

Build a complete, customizable Colorado checklist — filter by season, by how common a bird is, and by family, then download the PDF.

What kind of list do you need?

Birders use “Big” challenges to make birding count. Pick the timeframe you're working with, and I'll tune the list for it.

Better With Birds

Shop the birds you love

Chasing a Colorado big year? You're going to like the apparel, prints, and stickers we've designed around these birds.

Greater Sage-Grouse, Gunnison Sage-Grouse, Brown-capped Rosy-Finch, White-tailed Ptarmigan — all illustrated and designed by Jaymi at Better With Birds. Made-to-order, never mass-printed.