What bird is this?
Most people try to identify a bird by its colour, which is exactly why so many identifications go wrong. Colour is the least reliable thing about a bird: it shifts with light, with the season, with the bird’s age, and it is often different between males and females of the same species. Experienced birders work in a fixed order, and it is worth copying, because it gets you to the right answer far more often on a poor photo.
Identify a bird in three checks, in this order
1. Size and shape, measured against a bird you know
Do not estimate inches. Compare. Is it smaller than a sparrow, about robin-sized, or bigger than a crow? Those three anchors cover almost everything you will see in a yard. Then look at proportions, which barely change with light: the bill (thin and pointed, short and conical, long and hooked), the tail (long and fanned, short and square, forked), and the legs. A short conical bill means a seed eater. A thin needle bill means an insect eater. That one observation eliminates most of the field before you have thought about colour at all.
2. What it was doing, and where
Behaviour is nearly as diagnostic as anatomy and it is free information. Was it clinging vertically to a tree trunk, walking head-first down it, hopping on open lawn, hanging upside down from a twig, or hovering? Woodpeckers brace against a trunk with stiff tails; nuthatches walk down head-first, which almost nothing else does; robins run and stop on open ground. Note the habitat too. A brown streaky bird in a marsh and the same shape in a suburban hedge are usually two different species.
3. Colour and pattern, last
Now look at colour, and look at pattern rather than hue. Where are the marks, not what shade are they? Wing bars, eye rings, eye lines, a streaked versus a plain breast, and the tail pattern in flight are all stable features that survive bad light. "Reddish" is not an identification. "Reddish with two white wing bars and a notched tail" usually is.
The bird pairs that fool almost everyone
If you have narrowed it to one of these, you are close. Each pair below is separated by one feature you can genuinely see in a photo.
Look at the flanks. House Finch has brown streaks running down its sides; Purple Finch does not, and its red washes further back over the head and back, often described as dipped in raspberry juice rather than painted on the front.
The tail tip. Cooper’s is rounded, with a broad white band at the end; Sharp-shinned is square or slightly notched with a thin band. Head size helps too: Cooper’s looks large-headed, like it is wearing a cap.
The tail in flight. A crow’s tail opens like a fan, evenly rounded; a raven’s is wedge-shaped, coming to a point in the middle. Ravens also soar for long stretches, while crows flap almost constantly.
Song Sparrow is heavily streaked underneath, usually with a dark central spot on the breast, and lives in brushy edges. House Sparrow is unstreaked and plain below, and is the one on the pavement outside a supermarket.
Winter goldfinches lose their bright yellow and confuse people badly. Check the wings: goldfinch always keeps sharp black wings with a bold white wing bar and a short notched tail. House Finch wings stay plain brown.
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Get HuckCommon questions
Can I identify a bird from a blurry photo?
Often yes, if the silhouette is intact. Shape, proportions, and the bird’s posture survive blur far better than colour does, and they are more diagnostic anyway. A sharp photo of a bird from behind is usually less useful than a soft photo from the side.
Why does the same species look different in my two photos?
Three usual reasons: males and females are often coloured differently, many birds have a duller non-breeding plumage in autumn and winter, and young birds can look nothing like adults for the first year. Goldfinches, starlings, and most warblers are notorious for this.
What if I only heard it?
Song is one of the most reliable identifications there is, and in dense cover it is often the only one available. Note the rhythm and pattern rather than trying to describe the notes, and check it against a recording for the species you suspect.
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