Cinnamon Hummingbird: A Genuine but Accidental Arizona Rarity
A hummingbird with underparts that run solid cinnamon-orange from chin to belly, no green patch anywhere on the throat or chest, sounds like something that should be easy to spot. In the United States it almost never happens: the Cinnamon Hummingbird (Amazilia rutila) is a year-round resident of Mexico and Central America, and its US presence is rare enough that the Arizona Bird Committee's official review list classifies it as a species requiring formal documentation before any sighting is accepted into the state record.
That combination, a bird with genuinely distinctive field marks paired with real but exceptionally rare US records, is worth understanding on its own terms rather than lumping it in with the more familiar species covered in our roster of hummingbirds you'll actually see in the US. This guide covers what a Cinnamon Hummingbird actually looks like, where it lives, why Arizona sightings are so uncommon, and what it gets confused with when one does turn up.
None of that rarity is about the bird being scarce in general. Across its actual range, Cinnamon Hummingbird is one of the more familiar, easily found species, common enough around gardens and forest edges that Mexican and Central American birders barely give it a second look. The rarity is entirely a function of geography: almost the whole population stays well south of the US border, and it takes an unusual individual to end up anywhere near it.
What a Cinnamon Hummingbird Actually Looks Like
The name is literal. The species name rutila comes from the Latin for "golden," "red," or "auburn," and the nominate subspecies lives up to it: bronze-green upperparts give way to underparts that run cinnamon to cinnamon-rufous across the entire chest and belly, paler only on the chin and upper throat. The tail is deep cinnamon-rufous to rufous-chestnut with dark metallic bronze tips, and the wings are dark brownish-slate, a contrast that makes the body color read even warmer in flight.
Size sits in the middle of the hummingbird range: 9.5 to 11.5 cm (3.7 to 4.5 inches) long, weighing about 5 to 5.5 grams, in the same general size class as most hummingbirds a US birder would recognize. The bill is where the sexes split most clearly: males show a red bill tipped in black, while females carry a mostly black bill with red only at the base. Juveniles have an all-black bill and rufous edging on the face, crown, and rump that adults lack.
Four subspecies are currently recognized, and they vary more than a passing glance would suggest. The nominate rutila covers western coastal Mexico into Central America; diluta, in northwestern Mexico, runs slightly less intensely green above and paler, pinker below; corallirostris, found in Honduras and Nicaragua, shows richer, deeper color overall; and graysoni, isolated on Mexico's Islas Marías, is notably larger and darker than the rest, distinctive enough that some researchers have proposed treating it as its own species.
The genus itself, Amazilia, is a large group of mostly Central and South American hummingbirds, and Cinnamon Hummingbird is one of the easier members to place by sight precisely because none of its close relatives share that uninterrupted cinnamon underside. Taxonomic history adds a wrinkle worth knowing: the species was first described in 1842 as Ornismya cinnamomea, then renamed rutila the following year after a naming conflict, which is why the scientific name references color twice over, once in the discarded original epithet and once in the one that stuck.
Range: A Bird of Mexico and Central America, Full Stop
Nearly the entire population lives south of the US border. The range runs along Mexico's Pacific coast and across the Yucatán Peninsula, then south through Belize, Guatemala, El Salvador, Honduras, Nicaragua, and Costa Rica, from sea level up to roughly 1,600 meters (5,200 feet) in elevation. Within Mexico, the species occupies a long list of states from Sinaloa and Nayarit down through Jalisco, Colima, Guerrero, Michoacán, Oaxaca, and Chiapas, plus the Yucatán states of Campeche and Quintana Roo.
Habitat preference is specific and consistent across that whole range. eBird describes it as a bird of "dry tropical lowlands," favoring "scrubby woodland and edge, gardens, semi-open areas with flowering trees," which lines up with Wikipedia's description of primary and secondary deciduous forest, semi-deciduous forest, and thorn forest. It is a true year-round resident wherever it occurs, not a species with a seasonal migration route that might plausibly bring it north on a predictable schedule.
Why (and How Rarely) It Reaches Arizona
That last point matters for understanding what a US sighting actually represents. Because the Cinnamon Hummingbird is non-migratory, any individual that turns up north of its normal range is a genuine vagrant, an out-of-range wanderer, rather than a bird whose migration path simply overshoots its usual endpoint the way a true migrant occasionally does. Our guide to how hummingbird migration actually works covers that seasonal movement pattern in more depth; a Cinnamon Hummingbird sighting in the US has nothing to do with it.
The Arizona Bird Committee, the body responsible for maintaining the state's official bird records, lists Cinnamon Hummingbird as a review species, meaning every claimed sighting needs photographs or detailed written documentation before the committee will accept it into the record. Wikipedia's list of Arizona birds goes a step further and codes it as (A), for Accidental, defined there as a species "seen only a few times, or only once" in the state's entire recorded history. That is a materially different, and rarer, category than the near-annual Mexican specialties that show up in southeastern Arizona's canyons most summers.
That documentation requirement is standard practice for accidental-level rarities generally, not unique to this species: a written description or photograph gives the committee something concrete to weigh against the possibility of a misidentified common bird, an odd-plumaged individual of a more expected species, or a simple observer error. Without that record, even a genuine sighting stays informal rather than becoming part of Arizona's accepted state list.
Identification: What It Gets Confused With
The solid cinnamon underparts are the field mark to lock onto, but they only help if you get a clean look from the front. eBird notes that when viewed only from behind, a Cinnamon Hummingbird can be mistaken for a Buff-bellied or Rufous-tailed Hummingbird, both of which show a green throat and chest from a frontal angle but can look superficially similar from the back, where the rufous tail and slate wings are all that's visible.
The bill is the more reliable tiebreaker when the throat isn't visible. A male Cinnamon Hummingbird's bill runs red with a black tip, while a female's is mostly black with red only at the base, a two-toned pattern that neither Buff-bellied nor Rufous-tailed Hummingbird shares in quite the same way. Getting a clear look at both the underparts and the bill before ruling a bird in or out is the safest approach with a sighting this uncommon.
Diet and Feeding Behavior
Like every hummingbird, a Cinnamon Hummingbird's diet is built around nectar from a wide range of flowering plants, supplemented with small insects for protein. In the wild, that nectar is chemically simple: flower nectar is essentially sugar water, which is the same reasoning behind why Nectar Bliss sells plain cane-sugar nectar with no red dye added, matching what the birds are actually adapted to drink rather than adding anything they don't need.
The species is also notably territorial for its size. It defends feeding sites from intrusion by other hummingbirds, bees, and butterflies, foraging mostly from the forest understory to the mid-story, though it will also visit taller flowering trees when the understory isn't productive.
Breeding and Nesting
Breeding timing varies by location rather than following one fixed calendar window; across the species' full range, some population is breeding in essentially every month of the year. The nest is a cup built from plant material and spider web, placed on a horizontal branch, and documented nests have included a small wooden platform base along with kapok seed fibers mixed with grass, bits of wood, and lichen for camouflage. Clutch size is two eggs, typical for hummingbirds generally.
Conservation Status
None of this rarity in the US reflects any concern for the species overall. The IUCN lists Cinnamon Hummingbird as Least Concern, with a population estimated at 500,000 or more mature individuals across a large, stable range. The only threats noted are localized habitat destruction in specific parts of its range, not anything approaching a range-wide decline.
For US birders, that's the real takeaway: a Cinnamon Hummingbird sighting anywhere north of Mexico is a matter of individual chance, not a population under stress trying to expand its range. If you want a reliable look at one, the trip is to Pacific Mexico or Central America, not a feeder watch in the American Southwest. For everything else in the hummingbird family that does show up regularly in the US, our guide to the species you'll actually encounter is the better starting point.
Frequently Asked Questions
Has a Cinnamon Hummingbird ever been recorded in the United States?
Yes, but rarely. The Arizona Bird Committee classifies it as a review species and Wikipedia's list of Arizona birds codes it as Accidental, meaning it has been documented only a small number of times in the state's entire recorded history. It is not a species anyone should expect to see at a US feeder in a typical year.
What does a Cinnamon Hummingbird look like?
It has bronze-green upperparts, a deep cinnamon-rufous tail tipped in dark bronze, and underparts that run uniformly cinnamon-orange from the chin to the belly, with no green patch on the throat or chest. Males have a red bill tipped in black, while females have a mostly black bill with a red base. It measures about 9.5 to 11.5 cm long and weighs roughly 5 to 5.5 grams.
Where do Cinnamon Hummingbirds live?
They are year-round residents of Mexico and Central America, found along Mexico's Pacific coast and the Yucatán Peninsula, then south through Belize, Guatemala, El Salvador, Honduras, Nicaragua, and Costa Rica. They favor dry tropical lowlands, including deciduous and semi-deciduous forest edges, thorn forest, and gardens with flowering trees, from sea level up to about 1,600 meters.
How do you tell a Cinnamon Hummingbird from a Buff-bellied Hummingbird?
From the front, a Buff-bellied Hummingbird shows a green throat and chest, while a Cinnamon Hummingbird's underparts run solid cinnamon all the way to the chin. Viewed only from behind, the two can look similar enough that eBird specifically flags the confusion risk, so a clear look at the throat and bill color matters more than the tail or back.
Are Cinnamon Hummingbirds endangered?
No. The IUCN lists the species as Least Concern, with a population estimated at 500,000 or more mature individuals and a range described as large and stable. The only threats noted are localized habitat loss in parts of its range, not a range-wide decline.