Black-Chinned Hummingbird: The Field Marks That Actually Work

One habit gives away a Black-chinned Hummingbird before you ever see its throat color: it pumps and flares its tail up and down while hovering at a feeder, a tic that eBird notes it does more than other hummingbirds and that the Audubon field guide describes as flipping and spreading its tail actively in flight. That single behavior is often more reliable than the "black chin" the bird is named for, since the gorget can look plain black or nearly invisible depending on the angle of the light. If you garden or run a feeder anywhere in the western half of the country, this is the hummingbird you are most likely to be second-guessing.

The Field Marks That Actually Work

Black-chinned Hummingbirds (Archilochus alexandri) are small even by hummingbird standards, measuring about 3.5 inches long with a wingspan around 4.3 inches and a weight of just 2.3 to 4.9 grams, according to the Cornell Lab's All About Birds identification guide. Adult males have a black throat with a thin band of iridescent purple at the very bottom, a band that only flashes color when it catches direct light; in shade or from most angles, the whole throat reads as flat black. Look for a small white spot behind each eye and a fairly straight, slender bill, both called out on the same Cornell page.

The back is dull metallic green on both sexes, and the underparts are grayish-white, so from a distance a Black-chinned can look like almost any other small green-backed hummingbird in the West. That is exactly why the tail-pumping habit matters so much for a live bird at a feeder: it is visible before the throat color is, and it holds up in flat light when gorget color does not.

Female and Immature Black-Chinned Hummingbirds: The Hard Case

Female black-chinned hummingbird identification is the part most guides gloss over, and it is the part birders actually struggle with. Females lack any throat color at all: All About Birds describes them as "dull metallic green above with whitish underparts," with a plain, pale throat and white tips on the three outermost tail feathers, details confirmed on the same Cornell ID page. eBird adds a useful negative field mark: females show "almost no buffy tones" on the flanks or belly, which rules out a rufous- or buff-washed bird and points toward Black-chinned or one of its plain-throated relatives, per eBird's species account.

Bill length is a second, more consistent clue. Females and immatures have a proportionally long, fairly slender bill, longer than a female Anna's or Costa's typically shows, and eBird describes it as having a "slight droop" compared to a Ruby-throated's straighter bill. None of these differences are dramatic on their own; taken together with range and the tail-pumping habit, they are usually enough to call a sighting with reasonable confidence. For a broader rundown of how males and females differ across species generally, see our guide to telling male and female hummingbirds apart.

Black-Chinned Hummingbird vs. Ruby-Throated Hummingbird

This is the comparison most people searching for this bird actually need, and Cornell's own species-comparison page treats it as the headline pairing. For adult males, throat color settles it: "Ruby-throated have a red throat and Black-chinned Hummingbirds have purple throat," per All About Birds' side-by-side comparison.

Females are the genuine challenge. Cornell's comparison page puts the most reliable mark in proportions, not color: "Ruby-throated Hummingbirds have a longer tail that extends beyond the wingtips, whereas Black-chinned Hummingbirds have longer wings that reach the tip of the tail." At rest, that means a female Ruby-throated's folded wingtips fall visibly short of the tail tip, while a female Black-chinned's wingtips reach it almost exactly. eBird calls the two species "very difficult to distinguish... especially females and young males" and adds that Black-chinned tends to run "dingier green" above with a longer, slightly drooped bill and broader, more club-shaped outer wing feathers, though it notes those last two differences are subtle enough to need a good, close look, per eBird's account.

Range does most of the practical work, though. Black-chinned Hummingbird is a western species that breeds from the interior Pacific states east through the Rockies and south through Texas, while Ruby-throated Hummingbird breeds across the eastern half of the country; the two overlap only in a narrow band, mainly in parts of Texas and the southern Plains. If you are seeing a plain-throated hummingbird west of the Rockies, Black-chinned is by far the safer bet before Ruby-throated even enters the conversation. We cover the eastern counterpart in detail in our Ruby-throated Hummingbird identification guide.

Black-Chinned Hummingbird vs. Anna's Hummingbird

Across much of California, Arizona, and the wider Southwest, Anna's Hummingbird is the more likely mix-up, since the two species' ranges overlap over a large area. The male comparison is easy: "Adult male Anna's Hummingbirds have a red crown, whereas adult male Black-chinned Hummingbirds have a green crown," according to the same Cornell comparison page. A Black-chinned male never shows any red on the top of the head; if you see a rosy-pink or red crown, you are looking at an Anna's.

Females and immatures are closer, but Cornell flags a single useful mark: "Most Anna's also have a red spot on the throat that Black-chinned lack." Anna's Hummingbirds also tend to be stockier-bodied with a shorter bill relative to a Black-chinned's longer, thinner one. For a full breakdown of Anna's field marks and range, see our Anna's Hummingbird identification guide. And if the bird in question has a longer, more strongly flared gorget or a distinctly curved bill, you may actually be looking at a Costa's or Lucifer Hummingbird instead; Cornell's comparison tool covers both of those species as well.

Range and Migration: Where and When to Expect One

Black-chinned Hummingbird is, in Cornell's words, "exceptionally widespread, found from deserts to mountain forests" across the American West, breeding from the interior Pacific Northwest and California south through the Southwest and into Texas, per All About Birds' life history page. In Texas specifically, the Texas Parks and Wildlife Department lists it as a common warm-season resident across the western half of the state, with only rare winter sightings along the coast.

Almost the entire population winters in Mexico, though Cornell's range-map page notes that "many more pass through the southeastern United States and winter along the Gulf coast than was once believed," a pattern that has become better documented as more birders keep feeders up into winter. After breeding, many adults actually move uphill rather than south first, following blooming flowers into higher mountain habitat before the true southward migration begins in late summer and fall, a movement pattern also described on Cornell's life history page. If you are trying to work out when to expect the first and last birds of the season at your own feeders, the timing patterns described in that source apply broadly across western hummingbird species, not just this one.

Conservation-wise, the species is doing well. Partners in Flight estimates the global breeding population at 8.8 million birds, and Cornell rates it "Low Concern," with the population increasing roughly 0.3 percent annually between 1966 and 2019, per the same life history summary. That stability is credited in part to how well the species tolerates disturbed and urban habitat, not just pristine canyon riparian corridors.

Nesting, Sound, and Feeder Behavior

Away from the ID question, a few behaviors are worth knowing if you are hosting this bird in your own yard. Nests are tiny, compact cups built from plant down, spider silk, and cocoon fibers, usually saddled on a small dead branch about 6 feet up (rarely higher than 12 feet), holding two white eggs that incubate for 12 to 16 days before a 21-day nestling period, all per Cornell's life history page. Females typically raise one to three broods in a season, working alone the way most hummingbirds do.

Black-chinned hummingbird sound is easy to overlook because there is so little of it: Cornell describes the species' calls as "at least five different high-pitched chips and ticks" combined in different patterns depending on the situation, and notes that an actual song has only been documented twice, both times from males near Austin, Texas, described as "a sweet and low, though very high-pitched warble," per All About Birds' sounds page. What you are far more likely to hear is the wing hum itself, and during a male's courtship dive display, which can drop 66 to 100 feet from the top of a perch, the wings produce a higher-pitched, almost bell-like tone distinct from normal flight, according to the same page.

In the yard, Black-chinned Hummingbirds are among the more adaptable western species, comfortable in suburban gardens, canyon groves, and even recently disturbed habitat, and they will use sugar-water feeders readily alongside natural nectar sources and small flying insects, which make up a meaningful part of the diet. For an overview of how this species fits among the other hummingbirds you might see at a western feeder, our guide to the hummingbirds you'll actually see in the US is a useful next stop.

Frequently Asked Questions

How do you tell a black-chinned hummingbird from a ruby-throated hummingbird?

Adult males are separated by throat color: purple-based black on Black-chinned versus solid red on Ruby-throated. Females are harder, but wing-to-tail proportion is the most reliable mark: a female Black-chinned's folded wingtips reach the tip of the tail, while a female Ruby-throated's tail extends visibly past the wingtips. Range also helps, since the two species overlap only in a narrow zone in Texas and the southern Plains.

What does a female black-chinned hummingbird look like?

She has no throat color at all: a plain, pale grayish-white throat, dull metallic green upperparts, whitish underparts with little to no buffy wash, and white tips on the three outermost tail feathers. Her bill is proportionally long and slightly drooped compared to most similar species, and she shares the male's habit of pumping her tail while hovering.

Where do black-chinned hummingbirds live?

They breed across most of the western United States, from the interior Pacific Northwest and California through the Rocky Mountains, Southwest, and Texas, in habitats ranging from desert canyon washes to mountain forest edges and suburban gardens. Nearly the entire population winters in Mexico, though a growing number are documented wintering along the U.S. Gulf Coast.

What does a black-chinned hummingbird sound like?

Mostly a series of high, thin chips and ticks rather than any kind of song; researchers have documented an actual song only twice, both from males near Austin, Texas. The more distinctive sound is the wing hum during a male's courtship dive, which rises to a higher, almost bell-like pitch as he drops 66 to 100 feet from a high perch.

Do black-chinned and Anna's hummingbird ranges overlap?

Yes, extensively across California, Arizona, and much of the Southwest. The fastest way to separate the males is the crown: green on Black-chinned, red on Anna's. Females are trickier, but most Anna's show a small red throat spot that Black-chinned females lack entirely.