The Timeless Apparel for Life Outside

Products

Any two tees ship free

Fewer than 1% ask for a refund

Products

Birdline tees built for early starts, long looks and the ride home.
761 products
Built for the Odd Hours Octopus T-Shirt in Pepper, front viewBuilt for the Odd Hours Octopus T-Shirt, alternate view
Built for the Odd Hours Octopus T-Shirt

From $39.95

Built for This T-shirt in Seafoam, front viewBuilt for This T-shirt, alternate view
Built for This T-shirt

From $39.95

Cabin Fever Long Sleeve Shirt in Ash, front viewCabin Fever Long Sleeve Shirt, alternate view
Cabin Fever Long Sleeve Shirt

From $32.95

Cabin Fever T-Shirt in Light Blue, front viewCabin Fever T-Shirt, alternate view
Cabin Fever T-Shirt

From $29.95

Cabin Time Is Real Time T-Shirt in Pepper, front viewCabin Time Is Real Time T-Shirt, alternate view
Cabin Time Is Real Time T-Shirt

From $39.95

Field note

Patience finds the rare ones.

Birdline Outfitters

Calling This Cardio T-Shirt in Black, front viewCalling This Cardio T-Shirt, alternate view
Calling This Cardio T-Shirt

From $39.95

Camp Coffee Tastes Better T-Shirt in Blue Spruce, front viewCamp Coffee Tastes Better T-Shirt, alternate view
Camp Coffee Tastes Better T-Shirt

From $39.95

Camp It Down Campfire Bear T-Shirt in Heather Navy, front viewCamp It Down Campfire Bear T-Shirt, alternate view
Camp It Down Campfire Bear T-Shirt

From $29.95

Camp It Down Long Sleeve Shirt in Sand, front viewCamp It Down Long Sleeve Shirt, alternate view
Camp It Down Long Sleeve Shirt

From $32.95

Camp It Down T-Shirt in Sport Grey, front viewCamp It Down T-Shirt, alternate view
Camp It Down T-Shirt

From $29.95

Camp More Signal Less T-Shirt in Midnight, front viewCamp More Signal Less T-Shirt, alternate view
Camp More Signal Less T-Shirt

From $39.95

Camp Quiet Coffee Loud Beaver T-Shirt in Bay, front viewCamp Quiet Coffee Loud Beaver T-Shirt, alternate view
Camp Quiet Coffee Loud Beaver T-Shirt

From $39.95

Camp Quiet Ends at Dawn Goose T-Shirt in True Navy, front viewCamp Quiet Ends at Dawn Goose T-Shirt, alternate view
Camp Quiet Ends at Dawn Goose T-Shirt

From $39.95

Camp Security T-Shirt in Midnight, front viewCamp Security T-Shirt, alternate view
Camp Security T-Shirt

From $39.95

Camp Set Scope Ready T-Shirt in Ivory, front viewCamp Set Scope Ready T-Shirt, alternate view
Camp Set Scope Ready T-Shirt

From $39.95

Campfire Coffee Crew Otter T-Shirt in Espresso, front viewCampfire Coffee Crew Otter T-Shirt, alternate view
Campfire Coffee Crew Otter T-Shirt

From $39.95

Camping Was the Plan T-Shirt in Blue Spruce, front viewCamping Was the Plan T-Shirt, alternate view
Camping Was the Plan T-Shirt

From $39.95

Can't. Water's Calm. T-Shirt in Pepper, front viewCan't. Water's Calm. T-Shirt, alternate view
Can't. Water's Calm. T-Shirt

From $39.95

Canoe Believe It Long Sleeve Shirt in Navy, front viewCanoe Believe It Long Sleeve Shirt, alternate view
Canoe Believe It Long Sleeve Shirt

From $32.95

Canoe Believe It T-Shirt in Natural, front viewCanoe Believe It T-Shirt, alternate view
Canoe Believe It T-Shirt

From $29.95

Canoe Wagon and Dog T-Shirt in Grey, front viewCanoe Wagon and Dog T-Shirt, alternate view
Canoe Wagon and Dog T-Shirt

From $39.95

Cardinal Season T-shirt in Seafoam, front viewCardinal Season T-shirt, alternate view
Cardinal Season T-shirt

From $39.95

Caution Sudden Bird Stops T-Shirt in Sandstone, front viewCaution Sudden Bird Stops T-Shirt, alternate view
Caution Sudden Bird Stops T-Shirt

From $39.95

Cedar Day T-Shirt in Granite, front viewCedar Day T-Shirt, alternate view
Cedar Day T-Shirt

From $39.95

Cedar Waxwings Birdline T-Shirt in Black, front viewCedar Waxwings Birdline T-Shirt, alternate view
Cedar Waxwings Birdline T-Shirt

From $39.95

Chase the Call Owl T-Shirt in Grey, front viewChase the Call Owl T-Shirt, alternate view
Chase the Call Owl T-Shirt

From $39.95

Check the Tertials Duck T-Shirt in Light Green, front viewCheck the Tertials Duck T-Shirt, alternate view
Check the Tertials Duck T-Shirt

From $39.95

Check the Tertials Gull T-Shirt in True Navy, front viewCheck the Tertials Gull T-Shirt, alternate view
Check the Tertials Gull T-Shirt

From $39.95

Chickadee and Brambles T-shirt in Terracotta, front viewChickadee and Brambles T-shirt, alternate view
Chickadee and Brambles T-shirt

From $39.95

Chickadee Crew T-shirt in Denim, front viewChickadee Crew T-shirt, alternate view
Chickadee Crew T-shirt

From $39.95

Chickadee on the Pine T-shirt in Hemp, front viewChickadee on the Pine T-shirt, alternate view
Chickadee on the Pine T-shirt

From $39.95

Coastal Gull T-Shirt in Espresso, front viewCoastal Gull T-Shirt, alternate view
Coastal Gull T-Shirt

From $39.95

Coffee and Luna Moth T-Shirt in Crimson, front viewCoffee and Luna Moth T-Shirt, alternate view
Coffee and Luna Moth T-Shirt

From $39.95

Common Loon T-shirt in Butter, front viewCommon Loon T-shirt, alternate view
Common Loon T-shirt

From $39.95

Cooler Security Raccoon T-Shirt in Espresso, front viewCooler Security Raccoon T-Shirt, alternate view
Cooler Security Raccoon T-Shirt

From $39.95

Crane Country T-shirt in Blue Spruce, front viewCrane Country T-shirt, alternate view
Crane Country T-shirt

From $39.95

Current Plans T-Shirt in Washed Denim, front viewCurrent Plans T-Shirt, alternate view
Current Plans T-Shirt

From $39.95

Current Situation Long Sleeve Shirt in Ash, front viewCurrent Situation Long Sleeve Shirt, alternate view
Current Situation Long Sleeve Shirt

From $32.95

Current Situation T-Shirt in Light Blue, front viewCurrent Situation T-Shirt, alternate view
Current Situation T-Shirt

From $29.95

Currently Unavailable Otter T-Shirt in Blue Spruce, front viewCurrently Unavailable Otter T-Shirt, alternate view
Currently Unavailable Otter T-Shirt

From $39.95

Currently Unavailable T-Shirt in Grape, front viewCurrently Unavailable T-Shirt, alternate view
Currently Unavailable T-Shirt

From $39.95

Dad Checked the Weather T-Shirt in Flo Blue, front viewDad Checked the Weather T-Shirt, alternate view
Dad Checked the Weather T-Shirt

From $39.95

About Birdline tees at Birdline Outfitters

What a Birdline tee is made of

Most Birdline tees are printed on heavyweight garment-dyed cotton in a relaxed unisex fit. The fabric, fit and care for each design are listed on its product page.

Choosing a tee for the field

Birds notice movement and contrast long before they notice you. Muted earth tones — olive, sand, stone, bark — blend into cover; skip white, which reads as a flash of movement from across a field. Matte garment-dyed cotton doesn't catch the light the way technical fabrics can. Start the morning in a heavyweight tee and carry a light mid-layer for when the sun clears the treeline.

Sizing and fit

Birdline tees are a relaxed unisex fit with room to move. Every product page has a Find Your Fit guide with chest and length measurements for each size, so you can check before you order.

Our promise: no ruffled feathers

30-day guarantee. No ruffled feathers — every Birdline tee is backed by it.

Any two tees ship free. Free U.S. shipping on any two tees.

Field Set pricing. Put three or more tees in your cart and each drops to its Field Set price: Signature from $34, Everyday from $24.

Fewer than 1% refunds. Across all Birdline sales, fewer than 1% of customers have asked for one — the tees arrive as pictured and fit as described.

Order the right size the first time. Every product page has a Find Your Fit guide with chest and length measurements for each size, so check it before you order.

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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.”