Red-winged Blackbird
Agelaius phoeniceus
The valley's default marsh voice — "conk-la-ree" from every cattail stand, spilling into wet fields and feedlots. The commonest icterid here by a wide margin.
Seven icterids own the valley's marshes, meadows, and cottonwoods in spring — from the Red-winged Blackbird on nearly a third of April checklists to the Great-tailed Grackle strutting the parking lots. The males mostly name themselves. The group's real trap is the everyday glossy-black bird — Brewer's, grackle, or cowbird — and its evil twin, the big streaky brown female that gets called a sparrow. This key leads with the black-bird decoder and is honest about where the females quit.
Before species, bucket by color scheme and where the bird is working — it narrows to a pair fast.
Glossy-black males with a loud patch — a red-and-yellow shoulder, or a whole yellow head. Clinging to cattails and marsh reeds, singing. The females are big, brown, and streaky (see §05).
Black, no bright patch — the hard group. Lawns, lots, feedlots, town. Sort them on eye color and tail, not gloss alone (§03). The long keeled V-tail here is a Great-tailed's swagger.
The odd one out. Squat and short-tailed, cryptic brown-streaked back, a lemon-yellow breast with a black V, long spike bill, white outer tail flashing in flight. A ground bird of open grass and sage — flute-y song.
Trim and long-tailed, fine sharp bill. Male flame-orange with a black cap, throat-stripe, and big white wing patch; female yellow-olive. High in cottonwoods and shade trees, weaving a hanging pouch nest.
Tap through to a name — or to an honest "sp."
No-JS fallback — the tap-through version loads when scripts run.
The group's signature knot. Two clean axes — eye color and tail — do most of it; gloss and bill confirm.
The cleanest mark on a male. A pale, staring, whitish-yellow eye means Brewer's or a grackle. A dark eye on a small, brown-headed bird with a stubby bill is a cowbird. Catch: a female Brewer's has a dark eye too — so sex the bird first, or lean on tail and bill.
The size-free axis. Great-tailed's tail is enormous — often longer than the body — and males fold it into a deep keeled V. Brewer's is short and flat. A medium keeled tail on a smaller grackle points to the rare Common Grackle (§06). Cowbird's tail is short and plain like Brewer's — separate it by size and bill.
Backup once eye & tail lean. Cowbird: sparrow-small, thick conical finch bill, glossy black body with a brown hood (♂). Brewer's: medium, thin pointed bill, purple head-gloss over a green-glossed body. Great-tailed: big, long heavy bill, an overall purple-violet sheen.
Common → uncommon. Amber box = the clinching mark. Tap a name for eBird (photos, songs).
Agelaius phoeniceus
The valley's default marsh voice — "conk-la-ree" from every cattail stand, spilling into wet fields and feedlots. The commonest icterid here by a wide margin.
Icterus bullockii
Our breeding oriole — high in cottonwoods and shade trees, weaving a hanging pouch. Arrives late April–May; a dry chattering song. Any other oriole here is rare (§06).
Molothrus ater
A brood parasite — lays in others' nests. Feeds on lawns and under feeders, often walking with tail cocked; liquid gurgle then a thin whistle. The dark eye and stub bill separate it from Brewer's (§03).
Xanthocephalus xanthocephalus
Bigger, deeper-marsh cousin of Red-winged — colonies in tall bulrush over open water. The song is a famously awful rusty-hinge grind. Flocks into farm fields on migration.
Sturnella neglecta
A ground bird of open grass, sage, and field edges — walks, doesn't hop. The rich, flute-y, gurgling song is the clincher. Eastern Meadowlark is a near-impossible sight call and isn't on the county list (§06).
Euphagus cyanocephalus
The town-and-lot blackbird — struts parking lots, campgrounds, and stock yards. The default plain-black bird; sort it from cowbird by the pale eye and thin bill, from grackles by the short flat tail (§03).
Quiscalus mexicanus
A recent, booming colonist of valley towns — parking lots, canals, city parks, loud with clacks and whistles. Any big long-tailed grackle here is this; a smaller bronze-backed one is the rare Common (§05/§06).
The big streaky female, the two grackles, and a dull oriole.
The female / juvenile streaky knot — "what IS that brown thing"
The group's real quit-point. Female Red-winged is the classic miss: big, heavily streaked below on buff, a long pointed bill and a pale eyebrow — people call it a sparrow or a weird thrush. It isn't; the size and bill are wrong for a sparrow. Female/juv Brewer's and cowbird are plain grey-brown with a dark eye — the cowbird stubbier-billed and smaller, faintly streaked below; Brewer's longer and thinner-billed, cleaner. Female Yellow-headed is dark with an obvious yellow face, throat, and breast. Juvenile grackles and Red-wings are browner, less glossy versions of the adults. When a bird is distant or backlit and none of that resolves, the honest log is "blackbird sp." (§06).
Great-tailed vs Common Grackle
Great-tailed is the default here: big, a very long keeled V-tail, a flat crown, a bright yellow eye, and a fairly uniform purple-violet sheen. Common Grackle is noticeably smaller with a shorter (still keeled) tail, and the gloss is the tell — a bronze-brown back contrasting a blue-purple head, not the even sheen of a Great-tailed. Common is rare here (see §06) — read size, tail length, and that bronze back before you call it, and don't upgrade a Great-tailed on a hunch.
Bullock's Oriole — male vs female / immature
Male is unmistakable: flame-orange face and underparts, a black crown, eyeline, and narrow throat-stripe, black back, and a bold white wing patch. Female / immature is the miss — yellow-orange head and breast fading to a greyish-white belly, olive-grey back, and two thin whitish wingbars. Don't demote a dull female oriole into a warbler or a tanager: the size, the long thin slightly-curved bill, and the oriole structure give it away. A very small, dull oriole in fall could be a rarity (§06), so look twice.
The honesty ceiling, the rare-vs-default calls, the review birds, and two ghosts.
Both are logged categories on this county's own checklists — reaching them is honest, not lazy.
Where the odds, not the field marks, do the work — and where a name leans on voice.
On the 2020 UBRC Salt Lake County list but flagged for documentation. Photograph and report to records@utahbirds.org.
Review species that are not reported on the 2020 county list and absent from the eBird county histogram — the two sources agree these haven't occurred here.
Reported and not review — just rare in the histogram. Rare is not the same as review.