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
After Hours Navigation Bat T-Shirt in Black, front viewAfter Hours Navigation Bat T-Shirt, alternate view
After Hours Navigation Bat T-Shirt

From $39.95

Alabama Yellowhammer Country T-Shirt in Blue Spruce, front viewAlabama Yellowhammer Country T-Shirt, alternate view
Alabama Yellowhammer Country T-Shirt

From $39.95

Always Curious T-shirt in Denim, front viewAlways Curious T-shirt, alternate view
Best Seller Always Curious T-shirt

From $39.95

Always Looking T-shirt in Midnight, front viewAlways Looking T-shirt, alternate view
Limited Edition Always Looking T-shirt

From $39.95

American Goldfinch Field Study T-Shirt in Moss, front viewAmerican Goldfinch Field Study T-Shirt, alternate view
New in the Field American Goldfinch Field Study T-Shirt

From $39.95

Field note

No rush. The good ones are worth a second look.

Birdline Outfitters

Arizona Desert No Refills T-Shirt in Pepper, front viewArizona Desert No Refills T-Shirt, alternate view
Arizona Desert No Refills T-Shirt

From $39.95

Arkansas the Quiet Side Deer T-Shirt in Blue Spruce, front viewArkansas the Quiet Side Deer T-Shirt, alternate view
Arkansas the Quiet Side Deer T-Shirt

From $39.95

Ask Me About My Nemesis Bird T-Shirt in Hemp, front viewAsk Me About My Nemesis Bird T-Shirt, alternate view
Ask Me About My Nemesis Bird T-Shirt

From $39.95

Ask Me About the One That Left T-Shirt in Blue Jean, front viewAsk Me About the One That Left T-Shirt, alternate view
Ask Me About the One That Left T-Shirt

From $39.95

Aspens Kingfisher T-Shirt in Pepper, front viewAspens Kingfisher T-Shirt, alternate view
Aspens Kingfisher T-Shirt

From $39.95

Back by Dark-ish T-Shirt in Crimson, front viewBack by Dark-ish T-Shirt, alternate view
Back by Dark-ish T-Shirt

From $39.95

Bad Light Still Counts Heron T-Shirt in Black, front viewBad Light Still Counts Heron T-Shirt, alternate view
Bad Light Still Counts Heron T-Shirt

From $39.95

Bad Reception Bird Radio T-Shirt in Blue Spruce, front viewBad Reception Bird Radio T-Shirt, alternate view
Bad Reception Bird Radio T-Shirt

From $39.95

Bait First Breakfast Later T-Shirt in True Navy, front viewBait First Breakfast Later T-Shirt, alternate view
Bait First Breakfast Later T-Shirt

From $39.95

Barn Owl Moon T-Shirt in Ivory, front viewBarn Owl Moon T-Shirt, alternate view
Top Rated Barn Owl Moon T-Shirt

From $39.95

Barred Owl Pair T-Shirt in Black, front viewBarred Owl Pair T-Shirt, alternate view
Barred Owl Pair T-Shirt

From $39.95

Bear and Geese T-Shirt in Blue Spruce, front viewBear and Geese T-Shirt, alternate view
Bear and Geese T-Shirt

From $39.95

Bearly Off Grid T-Shirt in Pepper, front viewBearly Off Grid T-Shirt, alternate view
Bearly Off Grid T-Shirt

From $39.95

Best Spotter T-Shirt in Crimson, front viewBest Spotter T-Shirt, alternate view
Best Spotter T-Shirt

From $39.95

Best Wingman T-Shirt in True Navy, front viewBest Wingman T-Shirt, alternate view
Best Wingman T-Shirt

From $39.95

Better Offline T-Shirt in Black, front viewBetter Offline T-Shirt, alternate view
Better Offline T-Shirt

From $39.95

Bigfoot Fly Fishing T-Shirt in Pepper, front viewBigfoot Fly Fishing T-Shirt, alternate view
Bigfoot Fly Fishing T-Shirt

From $39.95

Bigfoot Forest T-Shirt in Moss, front viewBigfoot Forest T-Shirt, alternate view
Bigfoot Forest T-Shirt

From $39.95

Binoculars & Field Guide T-Shirt in True Navy, front viewBinoculars & Field Guide T-Shirt, alternate view
Binoculars & Field Guide T-Shirt

From $39.95

Binoculars First Opinions Later T-Shirt in Graphite, front viewBinoculars First Opinions Later T-Shirt, alternate view
Binoculars First Opinions Later T-Shirt

From $39.95

Bird Alerts Are My Plans T-Shirt in Washed Denim, front viewBird Alerts Are My Plans T-Shirt, alternate view
Bird Alerts Are My Plans T-Shirt

From $39.95

Bird Dog Actual T-Shirt in Ivory, front viewBird Dog Actual T-Shirt, alternate view
Bird Dog Actual T-Shirt

From $39.95

Bird Happens Long Sleeve Shirt in Sport Grey, front viewBird Happens Long Sleeve Shirt, alternate view
Bird Happens Long Sleeve Shirt

From $32.95

Bird Happens T-Shirt in Light Blue, front viewBird Happens T-Shirt, alternate view
Bird Happens T-Shirt

From $29.95

Bird Migration Map North America T-Shirt in Granite, front viewBird Migration Map North America T-Shirt, alternate view
Bird Migration Map North America T-Shirt

From $39.95

Bird Migration Map T-Shirt in Washed Denim, front viewBird Migration Map T-Shirt, alternate view
Bird Migration Map T-Shirt

From $39.95

Bird Nerd Binoculars T-Shirt in Pepper, front viewBird Nerd Binoculars T-Shirt, alternate view
Bird Nerd Binoculars T-Shirt

From $39.95

Bird Nerd Off-Roader T-Shirt in Crimson, front viewBird Nerd Off-Roader T-Shirt, alternate view
Bird Nerd Off-Roader T-Shirt

From $39.95

Bird Now Explain Later Magpie T-Shirt in Pepper, front viewBird Now Explain Later Magpie T-Shirt, alternate view
Bird Now Explain Later Magpie T-Shirt

From $39.95

Bird People T-Shirt in Blue Spruce, front viewBird People T-Shirt, alternate view
Bird People T-Shirt

From $39.95

Bird Roader T-Shirt in Berry, front viewBird Roader T-Shirt, alternate view
Bird Roader T-Shirt

From $39.95

Bird Roader Tailgate T-Shirt in True Navy, front viewBird Roader Tailgate T-Shirt, alternate view
Bird Roader Tailgate T-Shirt

From $39.95

Bird Tripper T-Shirt in Midnight, front viewBird Tripper T-Shirt, alternate view
Bird Tripper T-Shirt

From $39.95

Birdline Bigfoot Badge T-Shirt in Sandstone, front viewBirdline Bigfoot Badge T-Shirt, alternate view
Birdline Bigfoot Badge T-Shirt

From $39.95

Birdline Camping Van T-Shirt in Graphite, front viewBirdline Camping Van T-Shirt, alternate view
Birdline Camping Van T-Shirt

From $39.95

Birdline Dawn Patrol T-shirt in Grape, front viewBirdline Dawn Patrol T-shirt, alternate view
Birdline Dawn Patrol T-shirt

From $39.95

Birdline Elk Badge T-Shirt in Blue Spruce, front viewBirdline Elk Badge T-Shirt, alternate view
Birdline Elk Badge T-Shirt

From $39.95

Birdline Elk Stripes T-Shirt in White, front viewBirdline Elk Stripes T-Shirt, alternate view
Birdline Elk Stripes T-Shirt

From $39.95

Birdline Expedition T-Shirt in Pepper, front viewBirdline Expedition T-Shirt, alternate view
Birdline Expedition T-Shirt

From $39.95

Birdline Field Division T-Shirt in Hemp, front viewBirdline Field Division T-Shirt, alternate view
Birdline Field Division T-Shirt

From $39.95

Birdline Field Guide Kit T-Shirt in Grey, front viewBirdline Field Guide Kit T-Shirt, alternate view
Birdline Field Guide Kit T-Shirt

From $39.95

Birdline Field Team T-Shirt in Terracotta, front viewBirdline Field Team T-Shirt, alternate view
Birdline Field Team T-Shirt

From $39.95

Birdline Find What Matters T-Shirt in Light Blue, front viewBirdline Find What Matters T-Shirt, alternate view
Birdline Find What Matters T-Shirt

From $29.95

Birdline Find Your Perch T-Shirt in Natural, front viewBirdline Find Your Perch T-Shirt, alternate view
Birdline Find Your Perch T-Shirt

From $29.95

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.”