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
Dad Has a System T-Shirt in Blue Jean, front viewDad Has a System T-Shirt, alternate view
Dad Has a System T-Shirt

From $39.95

Dad Said It's Close T-Shirt in Midnight, front viewDad Said It's Close T-Shirt, alternate view
Dad Said It's Close T-Shirt

From $39.95

Dad Takes the Long Way T-Shirt in Grey, front viewDad Takes the Long Way T-Shirt, alternate view
Dad Takes the Long Way T-Shirt

From $39.95

Dam Fine Day T-Shirt in Midnight, front viewDam Fine Day T-Shirt, alternate view
Dam Fine Day T-Shirt

From $39.95

Dam Fine Weekend Beaver T-Shirt in Blue Spruce, front viewDam Fine Weekend Beaver T-Shirt, alternate view
Dam Fine Weekend Beaver T-Shirt

From $39.95

Dam Right T-Shirt in Grape, front viewDam Right T-Shirt, alternate view
Dam Right T-Shirt

From $39.95

Field note

Every tee here earned its spot.

Birdline Outfitters

Dawn Primer T-Shirt in True Navy, front viewDawn Primer T-Shirt, alternate view
Dawn Primer T-Shirt

From $39.95

Day Off T-Shirt in Pepper, front viewDay Off T-Shirt, alternate view
Day Off T-Shirt

From $39.95

Deer Lord T-Shirt in Crimson, front viewDeer Lord T-Shirt, alternate view
Deer Lord T-Shirt

From $39.95

Dirtbag Birder T-Shirt in Crimson, front viewDirtbag Birder T-Shirt, alternate view
Dirtbag Birder T-Shirt

From $39.95

Diving Kingfisher T-Shirt in True Navy, front viewDiving Kingfisher T-Shirt, alternate view
Diving Kingfisher T-Shirt

From $39.95

Dog Tired Human Happy T-Shirt in Black, front viewDog Tired Human Happy T-Shirt, alternate view
Dog Tired Human Happy T-Shirt

From $39.95

Don't Invite Me Migration T-Shirt in Blue Spruce, front viewDon't Invite Me Migration T-Shirt, alternate view
Don't Invite Me Migration T-Shirt

From $39.95

Drying Off Cormorant T-Shirt in Grape, front viewDrying Off Cormorant T-Shirt, alternate view
Drying Off Cormorant T-Shirt

From $39.95

Duck Around and Find Out T-Shirt in True Navy, front viewDuck Around and Find Out T-Shirt, alternate view
Duck Around and Find Out T-Shirt

From $39.95

Duck Taking Off T-shirt in Butter, front viewDuck Taking Off T-shirt, alternate view
Duck Taking Off T-shirt

From $39.95

Duck Yeah T-Shirt in True Navy, front viewDuck Yeah T-Shirt, alternate view
Duck Yeah T-Shirt

From $39.95

Eagle at Sunrise T-shirt in Khaki, front viewEagle at Sunrise T-shirt, alternate view
Eagle at Sunrise T-shirt

From $39.95

Eagle Mountain Double Exposure T-Shirt in Black, front viewEagle Mountain Double Exposure T-Shirt, alternate view
Eagle Mountain Double Exposure T-Shirt

From $39.95

Early Bird Field Club T-shirt in Brick, front viewEarly Bird Field Club T-shirt, alternate view
Early Bird Field Club T-shirt

From $39.95

Early Birder. Low Battery. T-Shirt in Blue Jean, front viewEarly Birder. Low Battery. T-Shirt, alternate view
Early Birder. Low Battery. T-Shirt

From $39.95

Early Check-In T-Shirt in Midnight, front viewEarly Check-In T-Shirt, alternate view
Early Check-In T-Shirt

From $39.95

Early Riser T-Shirt in Espresso, front viewEarly Riser T-Shirt, alternate view
Early Riser T-Shirt

From $39.95

Earn Your Quiet Porcupine T-Shirt in Blue Jean, front viewEarn Your Quiet Porcupine T-Shirt, alternate view
Earn Your Quiet Porcupine T-Shirt

From $39.95

Easier to Find by Water Otter T-Shirt in Blue Spruce, front viewEasier to Find by Water Otter T-Shirt, alternate view
Easier to Find by Water Otter T-Shirt

From $39.95

Easy Wasn't Marked T-Shirt in True Navy, front viewEasy Wasn't Marked T-Shirt, alternate view
Easy Wasn't Marked T-Shirt

From $39.95

Elk Yeah T-Shirt in Graphite, front viewElk Yeah T-Shirt, alternate view
Elk Yeah T-Shirt

From $39.95

Eye on the Canopy Warbler T-Shirt in Graphite, front viewEye on the Canopy Warbler T-Shirt, alternate view
Eye on the Canopy Warbler T-Shirt

From $39.95

Farther Out Puffin T-Shirt in Blue Spruce, front viewFarther Out Puffin T-Shirt, alternate view
Farther Out Puffin T-Shirt

From $39.95

Feeder Traffic T-Shirt in True Navy, front viewFeeder Traffic T-Shirt, alternate view
Feeder Traffic T-Shirt

From $39.95

Field & Flyway T-Shirt in Espresso, front viewField & Flyway T-Shirt, alternate view
Field & Flyway T-Shirt

From $39.95

Field Club T-shirt in Hemp, front viewField Club T-shirt, alternate view
Field Club T-shirt

From $39.95

Field Division T-Shirt in Espresso, front viewField Division T-Shirt, alternate view
Field Division T-Shirt

From $39.95

Field Notes T-shirt in Bay, front viewField Notes T-shirt, alternate view
Field Notes T-shirt

From $39.95

Field Reset T-Shirt in True Navy, front viewField Reset T-Shirt, alternate view
Field Reset T-Shirt

From $39.95

Field Snack Inspector Raccoon T-Shirt in Sandstone, front viewField Snack Inspector Raccoon T-Shirt, alternate view
Field Snack Inspector Raccoon T-Shirt

From $39.95

Field Snack Tax Raccoon T-Shirt in Washed Denim, front viewField Snack Tax Raccoon T-Shirt, alternate view
Field Snack Tax Raccoon T-Shirt

From $39.95

Field Tested Long Sleeve Shirt in Sand, front viewField Tested Long Sleeve Shirt, alternate view
Field Tested Long Sleeve Shirt

From $32.95

Field Tested T-Shirt in Sport Grey, front viewField Tested T-Shirt, alternate view
Field Tested T-Shirt

From $29.95

Field Trip Long Sleeve Shirt in Black, front viewField Trip Long Sleeve Shirt, alternate view
Field Trip Long Sleeve Shirt

From $32.95

Field Trip T-Shirt in Heather Navy, front viewField Trip T-Shirt, alternate view
Field Trip T-Shirt

From $29.95

Finch, Please. T-Shirt in Crimson, front viewFinch, Please. T-Shirt, alternate view
Finch, Please. T-Shirt

From $39.95

Find What Matters Long Sleeve Shirt in Royal, front viewFind What Matters Long Sleeve Shirt, alternate view
Find What Matters Long Sleeve Shirt

From $32.95

Find Where the Heron Backpack T-Shirt in Sandstone, front viewFind Where the Heron Backpack T-Shirt, alternate view
Find Where the Heron Backpack T-Shirt

From $39.95

Find Your Line Birdwatcher T-Shirt in Pepper, front viewFind Your Line Birdwatcher T-Shirt, alternate view
Find Your Line Birdwatcher 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.”