Maine Hummingbirds: 4 Awesome Documented Species

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This article identifies all hummingbirds documented as seen in Maine and where they are seen in the state. It further identifies if that specific hummingbird species is a year-round resident, a seasonal visitor, or a rare vagrant hummingbird seen in Maine.

Which Species Of Maine Hummingbirds Are Found In The State?

There are four species of hummingbirds documented as seen in Maine.
Documented Maine hummingbirds, listed in order of frequency seen are Ruby-throated, Rufous, Calliope, and Mexican Violetear hummingbirds.

Listed In The Order Of Frequency Seen:

These are the Maine statistics at the end of 2023, as reported by eBird.org.
Click the “Documented” link below for the current Maine stats.

Hummingbirds:	Number Seen:	Documented:
Ruby-throated	56,726	Documented
Rufous	87	Documented
Calliope	4	Documented
Mexican Violetear	1	Documented
Total Seen:	56,818

These four hummingbird species are found in Maine and are further classified into three groups:
Year-round residents, Seasonal visitors, and Rare/Vagrant visitors.

Hummingbird:	Year-Round, Seasonal, Rare/Vagrant
Ruby-throated	Seasonal
Rufous	Rare/Vagrant
Calliope	Rare/Vagrant
Mexican Violetear	Rare/Vagrant

For more information on Maine hummingbirds: Read my article: Maine Hummingbird Migration

Maine Hummingbirds That Are Year-Round Residents

There are no hummingbirds classified as year-round residents in Maine.

This hummingbird classification is defined as year-round residents residing in Maine 365 days a year.

Contrary to popular belief, hummingbirds can withstand far lower temperatures than most people would expect.

Some banded hummingbirds have been observed at temperatures as low as -9 degrees Fahrenheit with a wind chill of -36 degrees Fahrenheit, according to eBird.org.
See my article: 3 Reasons Why Hummingbirds Are Banded

Maine Hummingbirds That Are Seasonal

There is one Maine hummingbird classified as seasonal hummingbirds, which is the Ruby-throated hummingbird.  

Hummingbirds that fit within this category are those that migrate through Maine on a spring or fall emigration basis.

Hummingbirds move south to spend the winter in Mexico and Central America in the fall, after migrating north in the spring to reproduce.

Due to their preference, an ailment, or advanced age, certain seasonal hummingbirds may spend the whole winter in the state.

To see a current sighting map of Maine seasonal hummingbirds, click the links below:

Ruby-Throated Hummingbirds:

RUBY-THROATED HUMMINGBIRD – (Archilochus colubris)

Conservation Status: Least concerned
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Apodiformes
Family: Trochilidae
Genus: Archilochus
Species: A. colubris

Scientist Carl Linnaeus of Sweden is credited with giving the Ruby-throated hummingbird its scientific name. He initially classified the species as “Trochilus colubris.” Its name was revised more than a century later when German botanist Ludwig Reichenbach classed it as “Archilochus colubris,” which is now its scientific name and means “sky spirit/sun-god bird” or “top thief.”

Male Ruby-throated hummingbirds:
The beautiful iridescent blood-red gorget of male Ruby-throated hummingbirds ends at the neck.
His distinctive features are black wings, a light gray underbelly, and a dull metallic green topside.

The Ruby-throated hummingbird is a tiny species of hummingbird, measuring 2.8 to 3.3 inches in length and weighing less than 4.5 grams, or two U.S. dimes.
They live for three to five years on average. 

The metal plate that shields the wearer’s throat during combat to prevent injuries is the inspiration behind the name of the gorget on a male hummingbird. This name is acceptable and fitting to characterize the physical characteristics of male hummingbirds, since they fight fiercely for their own territory.
Read my article: Hummingbird Gorgets Explained

Female Ruby-throated hummingbirds:
Ruby-throated hummingbird females are usually larger than males, with a white throat stippled with light spots.
Ruby-throated hummingbird’s life expectancy is roughly three to five years.
The oldest female Ruby-throated hummingbird on record, at nine years old, is nearly twice as old as the male life expectancy.
See my article: Hummingbird Parents: (Mating to Nesting)

Note: The pollen on her head and beak. This female Ruby-throated hummingbird has been busy pollinating and drinking nectar from flowers to sustain her high metabolism.

Juvenile Ruby-throated hummingbirds:
Ruby-throated hummingbird juveniles, both male and female, have a white throat with faint stippling, just like their mother.  As the males become older, they start to show some color around their necks, and finally their stronger red throat feathers take center stage and proudly show off a vibrant gorget.

Note: The throat feathers are slowly coming in, displaying a few dots of color near the neckline and showing the first stages of adolescence. 

Note: This juvenile Ruby-throated hummingbird is struggling with a bee or wasp situation at the feeder.
See my article: Bees On My Hummingbird Feeder: (9 Tips To Get Rid of Them)

Baby Ruby-throated hummingbirds:
Baby Ruby-throated hummingbirds are easily identified by their undertail coverts, which are white fluffy feathers near their bottom that will disappear as they age.
See my article: Baby Hummingbirds: (Egg to Fledgling)

Note: The down feathers near the baby’s bottom are newly white and fluffy. Observe the great fat reserves they have amassed from the feedings of their devoted mother’s, which will help them get through puberty.

To see the current sighting map of Maine’s Ruby-throated hummingbirds, click the link.

Hear the sounds of the Ruby-throated hummingbird (Cornell Lab of Ornithology link).

99% of all Maine hummingbird sightings will be Ruby-throated hummingbirds.
On average, out of 10,000 hummingbird sightings in Maine, 9,983 will be of the Ruby-throated hummingbird.

The Ruby-throated Hummingbird migrates via two different routes in the spring and fall. 

The first migration route takes them directly, via the Gulf of Mexico, southwest to Mexico, where they travel nonstop until they reach Central America for the winter. 

Over 500 miles is the flight distance over the Gulf of Mexico. Despite being the direct “short” route, these birds must overcome many difficulties.
The total direct flight from Bangor, Maine, to Panama City, Panama, is 2,549 miles.

Not being able to rest, not having access to food or fuel, and needing to steer clear of the severe tropical Atlantic hurricanes while traveling to their destination are some of the challenges faced when flying over the Gulf of Mexico. To exacerbate the situation, they migrate during the night or are conducting a “Red-eye flight,” depending on your point of view.

Even though both sexes double their body fat before beginning their arduous transoceanic migratory pattern across the Gulf of Mexico, researchers think that males’ energy consumption is more taxing due to their small stature.

The second land migration path is 4,870 miles long and follows the Gulf of Mexico’s shoreline. Even though there are fewer guarantees of food sources along the way, taking the “long” route gives them the chance to stop and replenish.

Scientists are unclear and continue to investigate why one group of birds would prefer to take one route over the other.
Read my article: Hummingbird Migration in Maine

The most likely hummingbirds to be seen in a Maine winter would be the Ruby-throated and Rufous hummingbirds.

The majority of people are unaware of how tolerant hummingbirds are of chilly weather.

According to eBird.org, through branding practices in Wisconsin, the Ruby-throated and Rufous hummingbirds have been documented surviving in temperatures of -9F and wind chills of -36F.
Read my article: 3 Reasons Why Hummingbirds Are Banded

To provide the many hummingbirds that spend the winter in Maine access to life-sustaining nectar, several Maine hummingbird enthusiasts keep their hummingbird feeders up all winter long.

This altruistic deed also supplies nectar to other migrating species that are too injured or elderly to travel.
Read my article: 11 DIY Ways to Keep Hummingbird Nectar From Freezing

The Ruby-throated hummingbird is a common sight in parks, gardens, and backyards. It prefers open forests. Except for the breeding season, when they become ferociously territorial and hostile against hummingbirds of other species, they are solitary birds.

Despite their aggressive nature, these hummingbirds are eaten by predators like dragonflies, big crustaceans, praying mantises, and orb-weaver spiders.
Read my article: 10 Common Things That Kill Hummingbirds

Nine years and one month was the oldest known living female Ruby-throated hummingbird, found during a capture and release banding operation in West Virginia.
Read my article:  3 Reasons Why Hummingbirds Are Banded

Maine Hummingbirds That Are Rare/Vagrant

There are three Maine hummingbirds classified as rare or vagrant hummingbirds. They are the Rufous, Calliope, and Mexican Violetear hummingbirds.

Hummingbirds that live in a group outside of their typical geographic range are classified as belonging to this category. These hummingbird species not only span a vast range of distinct geographic areas, but they are also known to occasionally interbreed, giving rise to hybrids.

Although they are not in their usual range, reports of seeing these hummingbirds in Maine have been made.

To see a current sighting map of Maine rare/vagrant hummingbirds, click the links below:

Rufous Hummingbirds:

RUFOUS HUMMINGBIRD – (Selasphorus rufus)

Conservation Status: Near threatened
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Apodiformes
Family: Trochilidae
Genus: Selasphorus
Species: S. rufous

The Latin word rubrum, which means “red,” is the source of the Rufous hummingbird’s name due to its reddish-brown color.

Male Rufous hummingbirds:
The orange-red gorget of a male rufous hummingbird is iridescent, and their tail and sides have a rusty hue. Their underside is beige to white, and their bill is black.

Along with chocolate brown dorsal feathers, males can also have green plumage with green spots on their rustic-looking backs or on the summit of their heads.
They weigh 3.2 grams and range in length from 2.8 to 3.5 inches.

The metal plate that shields the wearer’s throat during combat to prevent injuries is the inspiration behind the name of the gorget on a male hummingbird. This name is acceptable and fitting to characterize the physical characteristics of male hummingbirds, since they fight fiercely for their own territory.
Read my article: Hummingbird Gorgets Explained

Note: The iridescent orange-red gorget.

Note: The gorget appears chocolate brown in this lighting, however, you can still see a glimmer of his iridescent orange-red gorget with some hints of yellow.

Female Rufous hummingbirds:
The female Rufous hummingbird is less colorful than the male because it lacks a gorget and iridescent feathers. In the wild, confusion may arise, though, because certain females have stippling or color specs along their throat line that resemble juvenile characteristics.
They are slightly larger than the males in anticipation of producing offspring.
See my article: Hummingbird Parents: (Mating to Nesting)

They have one of the northernmost breeding ranges of any hummingbird in the world; migrating north from Mexico and nesting as far north as Alaska to breed during the summer months.
They are polygamous and will mate with several partners in a season.
Read my article: Hummingbird Parents: (Mating to Nesting)
Read my article: Baby Hummingbirds: (Egg to Fledgling)

Juvenile Rufous hummingbirds:
In the wild, juvenile Rufous hummingbirds and Allen’s hummingbirds are nearly identical in terms of color and behavior. Therefore, range rather than appearance is used to establish identity.

The juvenile male Rufous’ rustic appearance is attributed to the iridescent orange dots on their neck.

Note: The throat feathers are slowly coming in, displaying a few dots of color near his neckline and showing the first stages of adolescence. 

Note: Preening flight feathers is an important daily routine to maintain hygiene and to keep the feathers flexible, strong, in alignment, and parasite-free.

Baby Rufous hummingbirds:
Baby Rufous hummingbirds are easily identified by their undertail coverts, which are white fluffy feathers near their bottom that will disappear as they age.
See my article: Baby Hummingbirds: (Egg to Fledgling)

To see the current sighting map of Rufous hummingbirds in Maine, click the link.

Hear the sounds of the Rufous hummingbird (Cornell Lab of Ornithology link).

15% of all Maine hummingbird sightings will be Rufous hummingbirds.
On average, out of 10,000 hummingbird sightings in Maine, only 15 will be a Rufous hummingbird.

Of all the birds in the world, Rufous hummingbirds migrate within the United States for the longest period of time. Every year, they traverse 3,900 miles in a clockwise manner around western America.

This migratory pattern during the seasons coordinates their arrival perfectly while catching nectar and blooming flowers throughout the year, fueling their bodies for their long journey.

In order to support a healthy migration, hummingbird enthusiasts are very beneficial when they cultivate blooming plants to draw hummingbirds and supply feeders with homemade hummingbird nectar. These friendly environments offer and guarantee safe trips in addition to a dependable haven for relaxation and refueling while on the road.

A large number of Rufous hummingbirds will choose to move south to Mexico rather than stay in Maine for the winter. Hummingbirds, however, can withstand far lower temperatures than most people think.

According to eBird.org, through branding practices in Wisconsin, the Rufous and Ruby-throated hummingbirds are documented surviving in temperatures of -9F and wind chills of -36F.
See my article: 3 Reasons Why Hummingbirds Are Banded

Many Maine hummingbird admirers leave hummingbird feeders up all winter long to provide life-nourishing nectar to the most commonly seen residents: the Rufous and Ruby-throated hummingbirds. 

This selfless act also provides nectar to other injured or older hummingbirds that are unable to migrate.
See my article: 11 DIY Ways to Keep Hummingbird Nectar From Freezing

When it comes to other hummingbirds and animals, Rufous hummingbirds are fiercely possessive and hostile. They are known for being aggressive and bold, driving large birds and rodents away from their favorite feeders in addition to other hummingbirds.
See my article: Why Hummingbirds Chase Each Other: Is it Friend or Foe?

It has even been observed that female mothers may attack squirrels and chipmunks that approach their nest too closely.

Due to their remarkable memory, Rufous hummingbirds have been observed to search for an abandoned hummingbird feeder years after it has been taken down.
Read my article: Hummingbird Adaptation and Remarkable Ability to Locate Food

Because of their unparalleled flying acrobatics, Rufous hummingbirds are fierce competitors at feeders, outmaneuvering all other species.

Rufous hummingbirds easily hybridize and cross-breed with other hummingbird species, such as Anna’s hummingbirds.

IUCN Red List classifies the Rufous hummingbird as “near threatened” because of habitat destruction in the Pacific Northwest.

In British Columbia, during a banding operation, the oldest living Rufous hummingbird was documented at 8 years and 10 months old.
Read my article:  3 Reasons Why Hummingbirds Are Banded

Calliope Hummingbirds:

CALLIOPE HUMMINGBIRD – (Selasphorus calliope)

Conservation Status: Least concerned
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Apodiformes
Family: Trochilidae
Genus: Selasphorus
Species: S. calliope

Calliope hummingbirds are named after a Greek mythological muse, who represented poetry and eloquence. Calliope means “beautiful voice” in ancient Greek.

Male Calliope hummingbirds:
The long, stunning row of feathers that protrude down the sides of the throat and their iridescent purple cap are characteristics that make male Calliope hummingbirds clearly identifiable.
These hummingbirds, which are 3 inches long and weigh 2-3 grams, have shiny green backs like many others. 

The metal plate that shields the wearer’s throat during combat to prevent injuries is the inspiration behind the name of the gorget on a male hummingbird. This name is acceptable and fitting to characterize the physical characteristics of male hummingbirds, since they fight fiercely for their own territory.
Read my article: Hummingbird Gorgets Explained

Female Calliope hummingbirds:
The female Calliope hummingbird is less colorful than the male and lacks a gorget and iridescent feathers. Their head’s crown, or top, has a grayish-green hue. The buff hue of the flanks refers to the sides, underbelly, and area beneath the wings.
See my article: Hummingbird Parents: (Mating to Nesting)

Juvenile Calliope hummingbirds:
Male and female juvenile Calliope hummingbirds initially resemble adult females until the male starts to develop the iridescent feathers that are characteristic of this species of hummingbird.

Note: His bright throat feathers are slowly coming in.

Baby Calliope hummingbirds:
Baby Calliope hummingbirds are easily identified by their undertail coverts, which are white fluffy feathers near their bottom that will disappear as they age.
See my article: Baby Hummingbirds: (Egg to Fledgling)

To see the current sighting map of the Calliope hummingbird in Maine, click the link.

Hear the sounds of the Calliope hummingbird (Cornell Lab of Ornithology link).

On average, out of 14,000 hummingbird sightings in Maine, only 1 will be a Calliope hummingbird.

Like many other hummingbirds, Calliopes use their feathers to manipulate their flight path in order to produce a variety of buzzing noises that serve as a type of language.  

The male will fervently fly back and forth and perform a “U” shaped courtship display to get the attention of the female when she is quietly perched. The male hummingbird will perform a vocal serenade for the female while swaying his body back and forth in front of her.
See my article: Hummingbird Dance: 5 Interpretive Explanations

A breeding area is established by male Calliope hummingbirds, who mate with any female that accepts their wooing.

In terms of social behavior, Calliope hummingbirds are generally solitary, especially outside of the breeding season. They are territorial, with males often defending prime feeding territories from other hummingbirds.
See my article: Why Hummingbirds Chase Each Other: Is it Friend or Foe?

The world’s smallest long-distance migratory bird is the Calliope hummingbird. Their springtime migration patterns resemble those of Rufous hummingbirds. 

Throughout their northward spring migration where they breed, they traverse the Pacific Flyways. On their southbound journey in the fall, they pass through the Pacific and Rocky Mountain Flyways towards their wintering destination in Mexico.

During the breeding season, female Calliope hummingbirds select the tips of pine cones as her building site for her nest. Along with stealing materials from other birds’ nests to build her own, she will also disassemble and recycle previous seasons’ nests. 

Therefore, larger and more aggressive hummingbirds, such as Allen’s and Rufous hummingbirds, frequently chase and attack female Calliopes. Compared to other species, the Calliope keeps a low profile in order to evade these attacks. 

Calliope hummingbirds hybridize and readily crossbreed with other hummingbird species, such as the Costa’s hummingbird.

Calliope hummingbirds are especially susceptible to habitat loss and natural catastrophes like wildfires and climate change because they have a smaller wintering range than other hummingbird species. 

The oldest known female Calliope hummingbird was twice captured during a 2007 and 2014 banding operation in Idaho. She was 8 years and 11 months old at the time of her capture.
See my article:  3 Reasons Why Hummingbirds Are Banded

Mexican Violetear Hummingbirds:

MEXICAN VIOLETEAR (aka GREEN VIOLETEAR) HUMMINGBIRD – (Colibri thalassinus)  

Conservation Status: Least concerned
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Apodiformes
Family: Trochilidae
Genus: Colibri
Species: C. thalassinus

Scientifically speaking, the Mexican Violetear is a species of hummingbird, Colibri thalassinus.
Thalassinus is a Latin term meaning “color of the sea.” 

The characteristic violet patch of feathers on the sides of this hummingbird’s head, which mimics an ear, gave rise to its popular name. The “violetear” description is accurate and vivid because of this bright patch that stands out against the bird’s otherwise green plumage.

Male Mexican Violetear hummingbirds:
The term “violet-ears” refers to the iridescent green color of male Mexican Violetear hummingbirds, which have brilliant violet ear patches on either side of their neck.
This hummingbird has metallic blue-green tail feathers with a black band underneath the bronze tail feathers in the center.
They weigh between 5 and 6 grams and have lengths ranging from 3.8 to 4.7 inches. 

Female Mexican Violetear hummingbirds:
Females typically have a less vibrant coloration compared to males. They have a primarily green plumage, which can appear as a dull green or blue-green. The green is iridescent and may shine with different intensities and hues in various lighting conditions.

The violet ear patches are present in females but are often less pronounced than in males.
The underparts of the female are typically a duller green compared to the males, and they may have some grayish or whitish markings.

The tail is typically dark, forked, and has some blue or green iridescence. It is usually less spectacular than that of the male.
See my article: Hummingbird Parents: (Mating to Nesting)

Juvenile Mexican Violetear hummingbirds:
Male and female Mexican Violetear hummingbirds in their juvenile years resemble adult females until the male starts to develop the characteristic iridescent violet ear patches on either side of his neck. 

Baby Mexican Violetear hummingbirds:
Baby Mexican Violetear hummingbirds are easily identified by their undertail coverts, which are white fluffy feathers near their bottom that will disappear as they age.
See my article: Baby Hummingbirds: (Egg to Fledgling)

To see the current sighting map of Maine’s Mexican Violetear hummingbirds, click the link.

Hear the sounds of the Mexican Violetear hummingbird (Cornell Lab of Ornithology link).

On average, out of 50,000 hummingbird sightings in Maine, only 1 will be the Mexican Violetear hummingbird.

From Mexico to Nicaragua, these hummingbird species are found on the outskirts of cloud forests, where they thrive in an environment with high levels of tropical humidity. It is common to see this dark hummingbird at forest margins and clearings.

Mexican Violetear hummingbirds are semi-nomadic. Since they have not been thoroughly examined, scientists know very little about their migration patterns. However, based on available data, the Mexican Violetear is primarily distributed in northern South America, middle Mexico, and middle America.  

Although Mexican Violetear hummingbirds are typically permanent residents of their natural habitat, a few individuals have strayed and ventured as far north as Wisconsin, Michigan, and even Canada. 

Much like a lot of other hummingbird species, the Mexican Violetear hummingbird nests alone. Although they do not feed in flocks, these hummingbirds are observed in groups around flowering trees, such as the coffee-shading Inga tree, where they scavenge for nectar and insects.

In terms of social behavior, Mexican Violetear hummingbirds are generally solitary, especially outside of the breeding season. They can be territorial, with males often defending prime feeding territories from other hummingbirds.
See my article: Why Hummingbirds Chase Each Other: Is it Friend or Foe?

The oldest known Mexican Violetear hummingbird was documented to be at least 11 years and 2 months old.

This information is based on banding records, where birds are captured, banded with a unique identification ring, and then potentially recaptured or found in the future. 

The age of this particular Mexican Violetear was determined by the length of time between its initial banding and its last documented recapture or sighting.
See my article:  3 Reasons Why Hummingbirds Are Banded

Which Maine Hummingbirds Are Most Frequently Seen In The State?

The most frequently seen Maine hummingbird is the Ruby-throated hummingbird.

Maine hummingbirds listed in order of frequency seen:

Ruby-throated Hummingbird: 99% of all hummingbirds seen in Maine are Ruby-throated hummingbirds.
Out of 10,000 Maine hummingbirds seen, 9,983 will be a Ruby-throated hummingbird.

Rufous Hummingbird: 0.15% of all hummingbirds seen in Maine are Rufous hummingbirds.
Out of 10,000 Maine hummingbirds seen, only 15 will be a Rufous hummingbird.

Calliope Hummingbird: Out of 14,000 Maine hummingbirds seen, only 1 will be a Calliope hummingbird.

Mexican Violetear Hummingbird: Out of 50,000 Maine hummingbirds seen, only 1 will be a Mexican Violetear hummingbird.

Where In The State Are Maine Hummingbirds Seen?

Hummingbirds are seen in Maine throughout the state.
Some are seen throughout the entirety of the state, while others are only seen in specific, limited areas of Maine.

Click the link below to see the current sighting map of where
Maine hummingbirds are being seen (eBird.org links)

• Ruby-throated hummingbird: This is where, in Maine, current sightings of this hummingbird are being reported.
• Rufous hummingbird: This is where, in Maine, current sightings of this hummingbird are being reported.
• Calliope hummingbird: This is where, in Maine, current sightings of this hummingbird are being reported.
• Mexican Violetear hummingbird: This is where, in Maine, current sightings of this hummingbird are being reported.

Read my article: Maine Hummingbird Migration

Check out my other posts on Hummingbird Questions

Happy Hummingbird Watching!

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