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
Otterly Unbothered T-Shirt in Graphite, front viewOtterly Unbothered T-Shirt, alternate view
Otterly Unbothered T-Shirt

From $39.95

Out Here on Purpose Squirrel T-Shirt in Blue Spruce, front viewOut Here on Purpose Squirrel T-Shirt, alternate view
Out Here on Purpose Squirrel T-Shirt

From $39.95

Out Of Office Long Sleeve Shirt in Ash, front viewOut Of Office Long Sleeve Shirt, alternate view
Out Of Office Long Sleeve Shirt

From $32.95

Out Of Office T-Shirt in Natural, front viewOut Of Office T-Shirt, alternate view
Out Of Office T-Shirt

From $29.95

Outside Is My Better Mood Bear T-Shirt in Grey, front viewOutside Is My Better Mood Bear T-Shirt, alternate view
Outside Is My Better Mood Bear T-Shirt

From $39.95

Field note

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

Birdline Outfitters

Outside Is My Good Side T-Shirt in Blue Spruce, front viewOutside Is My Good Side T-Shirt, alternate view
Outside Is My Good Side T-Shirt

From $39.95

Overcast Overjoyed Nuthatch T-Shirt in Denim, front viewOvercast Overjoyed Nuthatch T-Shirt, alternate view
Overcast Overjoyed Nuthatch T-Shirt

From $39.95

Owed Me a Look T-Shirt in Granite, front viewOwed Me a Look T-Shirt, alternate view
Owed Me a Look T-Shirt

From $39.95

Owl Be Damned. T-Shirt in Midnight, front viewOwl Be Damned. T-Shirt, alternate view
Owl Be Damned. T-Shirt

From $39.95

Owl Hours Only T-Shirt in Blue Jean, front viewOwl Hours Only T-Shirt, alternate view
Owl Hours Only T-Shirt

From $39.95

Owl in the Thicket T-shirt in Ivory, front viewOwl in the Thicket T-shirt, alternate view
Owl in the Thicket T-shirt

From $39.95

Owl See Myself Out T-Shirt in Crimson, front viewOwl See Myself Out T-Shirt, alternate view
Owl See Myself Out T-Shirt

From $39.95

Pack Light Look Long Moose T-Shirt in Washed Denim, front viewPack Light Look Long Moose T-Shirt, alternate view
Pack Light Look Long Moose T-Shirt

From $39.95

Papa Calls This Research T-Shirt in Black, front viewPapa Calls This Research T-Shirt, alternate view
Papa Calls This Research T-Shirt

From $39.95

Pardon My Squawk T-Shirt in Blue Spruce, front viewPardon My Squawk T-Shirt, alternate view
Pardon My Squawk T-Shirt

From $39.95

Parking Lot Mega Birding Vehicle T-Shirt in Midnight, front viewParking Lot Mega Birding Vehicle T-Shirt, alternate view
Parking Lot Mega Birding Vehicle T-Shirt

From $39.95

Patch Addict T-Shirt in Blue Spruce, front viewPatch Addict T-Shirt, alternate view
Patch Addict T-Shirt

From $39.95

Peace of Mind Loon T-shirt in Ice Blue, front viewPeace of Mind Loon T-shirt, alternate view
Peace of Mind Loon T-shirt

From $39.95

Peak Behavior T-Shirt in Midnight, front viewPeak Behavior T-Shirt, alternate view
Peak Behavior T-Shirt

From $39.95

Peak Birder T-Shirt in Blue Spruce, front viewPeak Birder T-Shirt, alternate view
Peak Birder T-Shirt

From $39.95

Peck Happens. T-Shirt in Midnight, front viewPeck Happens. T-Shirt, alternate view
Peck Happens. T-Shirt

From $39.95

Pecker Check Woodpecker T-Shirt in Blue Spruce, front viewPecker Check Woodpecker T-Shirt, alternate view
Pecker Check Woodpecker T-Shirt

From $39.95

Pedal Now Pie Later T-Shirt in Blue Jean, front viewPedal Now Pie Later T-Shirt, alternate view
Pedal Now Pie Later T-Shirt

From $39.95

Personal Space Department Skunk T-Shirt in Blue Jean, front viewPersonal Space Department Skunk T-Shirt, alternate view
Personal Space Department Skunk T-Shirt

From $39.95

Pileated Woodpecker T-shirt in Bay, front viewPileated Woodpecker T-shirt, alternate view
Pileated Woodpecker T-shirt

From $39.95

Pitch Please Long Sleeve Shirt in Ash, front viewPitch Please Long Sleeve Shirt, alternate view
Pitch Please Long Sleeve Shirt

From $32.95

Pitch Please T-Shirt in True Navy, front viewPitch Please T-Shirt, alternate view
Pitch Please T-Shirt

From $39.95

Pitch Please T-Shirt in Cornsilk, front viewPitch Please T-Shirt, alternate view
Pitch Please T-Shirt

From $29.95

Plans May Change for Rarities T-Shirt in Chambray, front viewPlans May Change for Rarities T-Shirt, alternate view
Plans May Change for Rarities T-Shirt

From $39.95

Play Through Bird First Golf T-Shirt in Black, front viewPlay Through Bird First Golf T-Shirt, alternate view
Play Through Bird First Golf T-Shirt

From $39.95

Plover at the Waterline T-shirt in Brick, front viewPlover at the Waterline T-shirt, alternate view
Plover at the Waterline T-shirt

From $39.95

Porch Weather T-Shirt in Blue Jean, front viewPorch Weather T-Shirt, alternate view
Porch Weather T-Shirt

From $39.95

Prairie Dreams T-shirt in Grey, front viewPrairie Dreams T-shirt, alternate view
Prairie Dreams T-shirt

From $39.95

Probably Herring Gull T-Shirt in Sandstone, front viewProbably Herring Gull T-Shirt, alternate view
Probably Herring Gull T-Shirt

From $39.95

Puffin Fanatic T-shirt in Sage, front viewPuffin Fanatic T-shirt, alternate view
Puffin Fanatic T-shirt

From $39.95

Puffin on the Coast T-shirt in Denim, front viewPuffin on the Coast T-shirt, alternate view
Puffin on the Coast T-shirt

From $39.95

Puffin on the Rocks T-shirt in Grape, front viewPuffin on the Rocks T-shirt, alternate view
Puffin on the Rocks T-shirt

From $39.95

Puffin Row T-shirt in Navy, front viewPuffin Row T-shirt, alternate view
Puffin Row T-shirt

From $39.95

Quiet Looks Good on Me Armadillo T-Shirt in Sandstone, front viewQuiet Looks Good on Me Armadillo T-Shirt, alternate view
Quiet Looks Good on Me Armadillo T-Shirt

From $39.95

Raccoon Binoculars Chair T-Shirt in Pepper, front viewRaccoon Binoculars Chair T-Shirt, alternate view
Raccoon Binoculars Chair T-Shirt

From $39.95

Rain Delays Coordinator Frog T-Shirt in Sage, front viewRain Delays Coordinator Frog T-Shirt, alternate view
Rain Delays Coordinator Frog T-Shirt

From $39.95

Range Day Binoculars T-Shirt in Brick, front viewRange Day Binoculars T-Shirt, alternate view
Range Day Binoculars T-Shirt

From $39.95

Raptor Obsessed T-shirt in Navy, front viewRaptor Obsessed T-shirt, alternate view
Raptor Obsessed 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.”