Birds
Which bird did this feather come from?
Feather identification runs on three things: length, pattern, and which part of the bird it came from. A wing feather is stiff and asymmetric, a tail feather is stiff and symmetric, and a body feather is soft and fluffy at the base. Get the type right first — half the failed identifications are a body feather being matched against pictures of wing feathers.
In the United States it is illegal to possess the feathers of almost any native bird. The Migratory Bird Treaty Act covers over 1,000 species and applies to feathers found on the ground, moulted feathers, and feathers picked up by children. There is no permit for casual collecting. Photograph it, measure it against a coin, and leave it where it is. Eagle feathers carry additional federal protection and severe penalties.
Narrow it down
Showing all 26 birds
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Wild turkey
Big, stiff and boldly barred black and white on the wing; tail feathers are broad, brown, finely barred, with a buff or chestnut band across the tip. Body feathers have a bronze-green iridescent sheen and a black rim.
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Canada goose
Plain grey-brown flight feathers with a paler edge and a slightly waxy feel, and a great deal of grey down. By far the most commonly found large feather in a city park.
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Mallard
The give-away is the speculum feather: a patch of iridescent blue-purple bordered with a crisp white bar at both ends. No other common bird produces that combination.
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Mourning dove
Soft grey-brown, with the outer tail feathers showing a black bar and a broad white tip. The feathers detach at the slightest pull, which is a defence — a predator ends up with a mouthful of feathers and no bird.
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Rock pigeon
Grey with a broad dark bar near the tip on many wing feathers, and neck feathers with a green and magenta iridescence. Enormously variable because of domestic breeding — white, chequered and rust forms are all common.
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American crow
Uniformly black with a faint purple gloss in sunlight, and a fanned tip on the outer flight feathers where the vane narrows abruptly. Common raven feathers are the same but noticeably longer, over 30 cm.
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Blue jay
Bright blue barred with black and tipped white — one of the most recognisable feathers in North America. The blue is structural, not pigment: hold it up with light coming through from behind and it goes brown.
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Northern cardinal
Solid deep red on males, dull olive-brown with red edges on females. The red is carotenoid pigment from the bird's diet, so unlike jay blue it stays red in any light.
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Red-tailed hawk
Handle with careTail feathers are brick-red above, often with a single dark band near the tip; wing feathers are broad, brown, and barred dark on a pale ground with a distinctly notched outer web near the tip.
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Great horned owl
Handle with careSoftly mottled grey-brown with fine barring, and — the diagnostic feature — a comb of stiff serrations along the leading edge of the outer wing feathers, which breaks up the airflow and makes the flight silent.
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Northern flicker
Brown barred black with the shaft and the underside of the vane a bright lemon yellow in the east or salmon red in the west. The coloured shaft is what identifies it.
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Pileated woodpecker
Sooty black with a clean white base to the inner web, and very stiff pointed tail feathers with a sharply worn tip — the tail props the bird against a trunk and takes real wear.
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European starling
Glossy black with green and purple iridescence and small buff-white spots at the tips in winter plumage. Body feathers are short, broad and blunt.
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Red-winged blackbird
Matt black flight feathers; the shoulder patch feathers are scarlet with a yellow band at the base, and those are unmistakable when you find one.
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American robin
Slate-grey wing and tail feathers, often with a small white spot at the tip of the outer tail feathers, and warm brick-orange body feathers from the breast.
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Ring-necked pheasant
Extremely long, narrow, pointed tail feathers, warm buff-brown with strong regularly spaced black bars. Body feathers are coppery with a black crescent and a metallic sheen.
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Great blue heron
Handle with careLong, broad, plain blue-grey flight feathers, and distinctive powder-down body feathers that disintegrate into a fine waxy dust when rubbed — the bird uses it to clean fish slime off its plumage.
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Ring-billed and herring gull
Clean white with a pale grey outer vane and, on the outer primaries, a black tip with a small white mirror spot. Juvenile feathers are heavily mottled brown.
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Wood duck
The flank feathers are the famous ones: buff with fine black barring and a bold black-and-white crescent at the tip, used in fly tying for over a century. The speculum is deep iridescent blue.
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Barred owl
Handle with careBoldly barred brown and white with the same soft velvety texture and serrated leading edge as other owls. Softer and less sharply patterned than a hawk feather of the same size.
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Common grackle
Black with a strong bronze, purple or blue-green iridescence depending on the angle. Tail feathers are long and keeled, so the bird can fold the tail into a V in flight.
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Peafowl
The eyed train feather needs no key. The eye is structural colour from photonic crystals in the barbules, not pigment, which is why it shifts as you move it.
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Cedar waxwing
Soft silky fawn-grey with a bright yellow band across the tail tip and, on some feathers, a red waxy tip like a drop of sealing wax — an actual pigment deposit, unique among North American birds.
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Downy and hairy woodpecker
Crisp black and white — flight feathers spotted or checked white on black, and stiff pointed black tail feathers with white outer ones. Hairy woodpecker feathers are the same pattern at half again the size.
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Sharp-shinned and Cooper's hawk
Handle with careSlate-grey or brown above with three to five bold dark bands across a paler underside. Very often found as a scattered pile of songbird feathers with these among them, at a plucking post near a feeder.
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Song sparrow, house finch and other small songbirds
Small, brown, streaked and, in practice, not identifiable to species from a single feather. Most small brown feathers found in gardens fall into this group and no honest key takes them further.
Nothing in this key matches every filter at once. That usually means one observation is off — a colour read in shade, or a size guessed rather than measured. Clear the filter you are least sure about and look again.
Work out which feather you have before anything else
A bird carries several thousand feathers in at least four structurally different kinds, and matching a body feather against a chart of wing feathers produces nonsense. Sorting them takes one look.
- Wing flight feather (remex). Stiff, with the shaft distinctly off-centre so one side of the vane is much narrower than the other. That asymmetry is what generates lift, and it is the fastest way to recognise a wing feather. The outermost ones are often notched or emarginated near the tip.
- Tail feather (rectrix). Also stiff, but with the shaft centred and the vane roughly equal on both sides — except the outermost pair, which are slightly asymmetric. Tail feathers are usually broader and more evenly patterned.
- Body or contour feather. Smooth and shaped at the tip, fluffy and disorganised at the base, and much softer overall. These carry most of a bird's visible colour and are the hardest to identify.
- Down. No real shaft, just a tuft of fluff. Almost never identifiable to species.
Say which one you have when you ask anyone for help, and photograph both sides — the pattern on the underside is often different and is frequently what settles it.
The law, which is stricter than most people believe
In the United States the Migratory Bird Treaty Act makes it illegal to possess the feathers of over 1,000 native species without a federal permit. It applies to feathers found on the ground, moulted feathers and feathers picked up by children on a walk. There is no exception for casual collecting, and none for feathers you did not take from a bird.
The unprotected species are the introduced ones: house sparrow, European starling, rock pigeon, and non-native game birds like pheasant and peafowl regulated under state law instead. Everything else — hawks, owls, jays, cardinals, herons, gulls, songbirds — is covered.
Eagle feathers carry additional protection under the Bald and Golden Eagle Protection Act, with penalties up to $100,000 and a year in prison for a first offence. Enrolled members of federally recognised tribes may apply to the National Eagle Repository for feathers for religious use; nobody else may possess them under any circumstances.
In the United Kingdom, the Wildlife and Countryside Act protects wild birds and their parts, and in the EU the Birds Directive is equivalent. In practice everywhere: photograph it, measure it against a coin, and put it back. A photograph is also a better record than the feather, because it keeps the location and the date.
A pile of feathers is a story
Scattered feathers on the ground are one of the commonest reasons people start identifying feathers, and the pattern of the scatter says who was responsible.
| What you see | Likely predator |
|---|---|
| Feathers plucked cleanly, shafts intact and undamaged, in a tight pile on a stump, post or low branch | Hawk. Raptors pluck with the beak and use a regular plucking perch |
| Shafts bitten through, feathers sheared off, saliva-matted clumps | Cat, fox or other mammal. Mammals chew rather than pluck |
| Feathers widely scattered over several metres with no concentration | Window strike, or a kill taken in flight and carried |
| A neat ring of small feathers with nothing else, often overnight | Owl. Owls also leave pellets nearby containing bones and fur |
| A pile beside a bird feeder | Sharp-shinned or Cooper's hawk, which specialise in hunting at feeders |
If a hawk is killing at your feeder, the choices are to take the feeder down for a week or two — which usually moves the hawk on — or to accept it. Hawks at feeders are the ecosystem working, and the hawk is protected regardless of how you feel about it.
How feathers get their colour, and why it matters for identification
Bird colour comes from two mechanisms, and knowing which one you are looking at is a genuine identification clue.
Pigments — melanins for black, grey and brown; carotenoids from the diet for red, orange and yellow. Pigment colour is in the feather and looks the same from every angle. A cardinal feather is red in any light. Carotenoid colours are diet-dependent, which is why a poorly fed male cardinal is a duller red and why flamingos fade in captivity without supplements.
Structural colour — produced by microscopic architecture in the feather barbs scattering specific wavelengths. All blue in birds is structural; there is no blue pigment in any bird feather. This gives a clean test: hold a blue feather up with light coming through it from behind. A blue jay feather goes brown, because the structure only works with light reflecting off the front. A red cardinal feather stays red.
Iridescence — the shifting greens and purples on a grackle, a starling or a hummingbird — is structural too, produced by thin-film interference in layered melanin granules, which is why the colour changes as you move the feather.
Melanin also does structural work: melanin-rich feathers are physically tougher and more resistant to abrasion and bacterial degradation. That is why so many pale birds have black wingtips, from gulls to gannets to pelicans. Those are the parts that wear.
What a single feather can and cannot tell you
The honest limit: many feathers are not identifiable to species by anyone. Small brown streaked feathers from sparrows, wrens, finches and warblers overlap so heavily that professional feather identification laboratories work from microscopic barbule structure and DNA rather than from appearance.
The Smithsonian Feather Identification Lab exists precisely because of this. It identifies bird remains from aircraft strikes for the FAA and the US Air Force, and it does the work with a reference collection of hundreds of thousands of specimens plus DNA barcoding — because a smear of feather material from a jet engine cannot be matched by eye.
What a single feather does reliably give you is a size class, a group and often a family. Barred and brown at 25 cm with a serrated leading edge is an owl. Bright blue barred with black and tipped white is a jay. Iridescent blue with white bars at both ends is a mallard speculum. Those are real identifications, and they are as far as most feathers go.
26 entries here, covering the birds whose feathers people actually find in North American gardens, woods and shorelines. For anything further, the US Fish and Wildlife Service Feather Atlas is the reference — it has high-resolution scans of the flight feathers of hundreds of North American species and a search tool that filters by size, pattern and colour.
Questions people ask about this
Is it illegal to keep a feather I found?
In the United States, yes for almost any native bird. The Migratory Bird Treaty Act covers over 1,000 species and applies to feathers found on the ground and moulted feathers, with no exception for casual collecting. The unprotected species are house sparrow, European starling, rock pigeon and non-native game birds. Eagle feathers carry additional federal protection with penalties up to $100,000. Photograph it and leave it.
How do I tell a wing feather from a tail feather?
Look at where the shaft runs. On a wing flight feather the shaft is well off-centre, so one side of the vane is much narrower than the other — that asymmetry is what makes lift. On a tail feather the shaft is centred and the vane is roughly equal on both sides. Body feathers are soft with a fluffy disorganised base and no stiffness.
What bird has a blue feather with black bars and a white tip?
A blue jay, in eastern and central North America. It is one of the most recognisable feathers on the continent. A useful check: hold it up with light coming through from behind and it turns brown, because blue in birds is structural colour produced by the feather's microscopic architecture rather than by any pigment.
I found a pile of feathers in my garden. What happened?
Look at the shafts. Cleanly plucked feathers with intact undamaged shafts, concentrated in a tight pile on a stump or post, means a hawk — raptors pluck with the beak at a regular perch. Shafts bitten through with sheared, saliva-matted clumps means a cat, fox or other mammal. A pile beside a bird feeder is almost always a sharp-shinned or Cooper's hawk.
Why does an owl feather feel different?
Owls have a comb of stiff serrations along the leading edge of the outer wing feathers and a velvety pile over the surface, which together break up the turbulence that makes flight audible. You can feel the serrations with a fingertip. It is unique to owls among North American birds and is diagnostic on its own.
Can I identify a small brown feather?
Usually not, and that is the honest answer rather than a failure. Feathers from sparrows, wrens, finches and warblers overlap so heavily that professional laboratories use microscopic barbule structure and DNA rather than appearance. What you can reliably get from a single feather is a size class and often a family — which for many purposes is the useful part anyway.
Are feathers safe to handle?
Wild feathers can carry mites, lice and bacteria, and in areas with avian influenza outbreaks the current public health advice is not to handle wild bird feathers or carcasses at all. Since possession is illegal for most species anyway, the photograph-and-leave rule covers both problems. If you do handle one, wash your hands.
Still not sure? Point a camera at it
A filter narrows birds down to a shortlist. Orvik reads the photo itself and names the species, with the look-alikes ranked underneath so you can check the call yourself.