Two birders beside an alpine lake wearing the Swainson's Hawk tee in ivory and the Field & Flyway tee in true navy

TIMELESS APPAREL
FOR LIFE OUTSIDE

Apparel inspired by birds, wild places, and the people who’d rather be out there.

TIMELESS APPAREL
FOR LIFE OUTSIDE

Apparel inspired by birds, wild places, and the people who’d rather be out there.

The Birdline Field Guide

Find your kind of birding. Then take it outside.

WHY BIRDLINE

Built like the shirt you keep reaching for.

Three weights, one standard. A heavyweight Signature, a lighter Everyday, and a Long Sleeve for cold starts — each chosen for how it wears after the tenth wash, not the first.

  1. 01
    Three weights

    A heavyweight Signature, a lighter Everyday, and a long sleeve for cold mornings.

  2. 02
    Ring-spun cotton

    Softer yarn and a smoother surface, in every line we make.

  3. 03
    Pre-shrunk

    The size you order is the size it stays.

  4. 04
    Sizes S–5XL

    One honest unisex cut, with the bigger sizes actually stocked.

  5. 05
    Original artwork

    Every design drawn for us. You won't find it on anyone else's shelf.

Still mountain lake at sunset with forested shores and layered ridges

Birds at heart.
Outside by nature.

A favorite trail. Coffee at camp. A bird at the feeder.
There is room for your kind of outside.

Join the Flock

New designs. Notes from the field and the trail. First looks.

Quick view

Loading…

Size Guide

Designed for comfort in the field and everywhere in between.

Find Your Fit

Height
Weight
Body Build
Preferred Fit

This is a starting-size estimate. Verify chest width in the Size Chart before choosing.

Between sizes? For a relaxed look, size up.
For a more fitted look, size down.

Size Chart

Size Chest width
(in)
Body length
(in)
Sleeve length
(in)
S18.2526.616.25
M20.252817.75
L2229.419
XL2430.7520.5
2XL2631.621.75
3XL27.7532.523.25
4XL29.7533.524.625

Garment measurements, taken with the tee lying flat. Compare them with a tee that fits you well.

Our Fit

Tee diagram showing chest and length measurement points
  • Relaxed, unisex fit
    Designed to move with you on every adventure.
  • Garment-dyed cotton
    Pre-shrunk for a soft feel that lasts.
  • Made for birders, worn everywhere
    Comfortable in the field, at camp and beyond.
“The joy of birding isn’t just in the birds we see, but in the life we notice because of them.”