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7 Fascinating Facts About the Blue-Tailed Hummingbird You Need to Know

With its striking blue tail feathers and iridescent green and blue plumage, the Blue-tailed Hummingbird (Saucerottia cyanura) is a small but captivating bird that can be found across Central and South America. Despite its diminutive size, this species is one of the most common hummingbirds in its range, and its distinctive features make it easily recognizable to birders and casual observers alike.


Field Identification

The Blue-tailed Hummingbird is a small bird, measuring only 8cm in length and weighing just 3 grams. It is easily identifiable by its iridescent green and blue plumage, which shimmers in the sunlight and stands out against a variety of backgrounds.

The bird’s most distinctive feature is its long, forked blue tail feathers, which extend well beyond the length of its body and trail behind it like a banner in flight. Other identifying features of the Blue-tailed Hummingbird include its short, straight bill, which is ideally suited to feeding on nectar from flowers.

The bird’s wings are also relatively short and rounded, which helps it to maneuver quickly and agilely through its habitat.

Similar Species

While the Blue-tailed Hummingbird is easily identifiable in the field, there are several other species that may be confused with it. One of the most similar is the Violet-crowned Hummingbird (Amazilia violiceps), which is found in the same general range and has a similar size and shape.

However, the Violet-crowned Hummingbird has a purple crown and throat rather than blue tail feathers. Another species that can be confused with the Blue-tailed Hummingbird is the Black-bellied Hummingbird (Eupherusa nigriventris), which has a similar green and blue coloration but lacks the long blue tail feathers.


The Blue-tailed Hummingbird has two distinct plumages: a breeding plumage and a non-breeding plumage. In breeding plumage, the male bird’s head and throat are a metallic bluish-green, while the upperparts are green and the underparts are greyish-white.

The long, forked tail feathers are a deep blue color. In non-breeding plumage, the male bird’s head and throat are a duller green, and the feathers on the upperparts and underparts may be slightly faded.

The blue tail feathers are still present, but they may be shorter than in breeding plumage. Females have a similar coloration to non-breeding males, with green upperparts and greyish-white underparts.

They lack the blue tail feathers of the male, however, and may sometimes be mistaken for other species of hummingbirds.


Like many bird species, the Blue-tailed Hummingbird undergoes a molt every year, during which it sheds and replaces its feathers. The timing and duration of the molt can vary depending on factors such as age, sex, and location, but in general, it occurs sometime between late summer and early winter.

During the molt, the bird replaces its feathers in a specific order, with the primary and secondary flight feathers being replaced first, followed by the body and tail feathers. This process can take several weeks, during which the bird may appear scruffy and disheveled as it sheds its old feathers and grows in new ones.


The Blue-tailed Hummingbird is a small but charismatic bird that is easily recognizable in the field by its iridescent green and blue plumage and long, forked tail feathers. Despite its commonness in its range, it remains a captivating sight for birders and nature enthusiasts alike, and its unique features make it a memorable addition to any birdwatching trip.

Systematics History

The Blue-tailed Hummingbird (Saucerottia cyanura) is a member of the Trochilidae family, which includes all hummingbird species. Its scientific name has gone through several changes over the years, with some taxonomists grouping it with other hummingbird species and others separating it into its own genus.

Geographic Variation

The Blue-tailed Hummingbird is found throughout Central and South America, with a range that extends from southern Mexico to northern Argentina. Within this range, there is significant variation in the bird’s appearance, particularly in terms of size and coloration.


Currently, there are three recognized subspecies of the Blue-tailed Hummingbird:

– Saucerottia cyanura cyanura: Found in Mexico, Belize, Guatemala, Honduras, El Salvador, Nicaragua, and Costa Rica. This subspecies is the smallest of the three and has a relatively short bill compared to the other subspecies.

– Saucerottia cyanura caerulea: Found in Panama and western Colombia. This subspecies is slightly larger than cyanura and has a more prominent blue coloration on the tail feathers.

– Saucerottia cyanura sapphiropygia: Found in eastern Colombia, Venezuela, and northern Brazil. This subspecies is the largest of the three and has a longer bill and a blue-green coloration on the upperparts.

Related Species

The Blue-tailed Hummingbird is closely related to several other hummingbird species, particularly those within the Saucerottia and Eupherusa genera. One of its closest relatives is the Ruby-throated Hummingbird (Archilochus colubris), a common North American species with a similar size and shape.

Historical Changes to Distribution

Over the course of history, the distribution of the Blue-tailed Hummingbird has undergone several significant changes. In the past, the bird was likely more widespread, with populations in areas that are now unsuitable for its habitat, such as the Andes mountains.

In more recent times, the Blue-tailed Hummingbird has experienced changes to its distribution due to habitat destruction and fragmentation. Deforestation and urbanization have led to the loss of the bird’s natural habitats, which include both forested and open areas, and have forced populations to move to new locations.

In some cases, populations have become isolated from each other, leading to subspecies that are unique to specific regions and unable to interbreed with others.

Conservation Efforts

As with many hummingbird species, the Blue-tailed Hummingbird is threatened by habitat loss, climate change, and other human impacts. Conservation efforts are underway to protect the bird’s natural habitat and educate local communities about the importance of preserving biodiversity.

One of the main conservation strategies for the Blue-tailed Hummingbird is to protect the areas where it is known to occur, particularly those that are designated as Important Bird Areas (IBAs) by conservation organizations. These areas are identified as critical for the conservation of bird populations and are managed to ensure their long-term viability.

Other conservation efforts include the restoration of degraded habitats, the control of invasive species that threaten native plant communities, and the establishment of buffer zones around protected areas to reduce the impact of human activities.


The Blue-tailed Hummingbird is a unique and beautiful species that is found throughout Central and South America. As with many bird species, it has undergone changes to its distribution over time due to human impacts and other factors.

However, recent conservation efforts are helping to protect the bird and its habitat, ensuring that it remains a valued part of the natural world for generations to come.


The Blue-tailed Hummingbird is a relatively adaptable bird species, and as such, can be found in a range of different habitats throughout its range. These habitats include both natural and human-modified environments, as long as there is a sufficient supply of nectar-producing plants.

One of the primary habitats of the Blue-tailed Hummingbird is forested areas, such as tropical and subtropical humid forests. These can be either primary or secondary forests, although the bird generally prefers areas with a dense understory and a high diversity of plant species.

In addition to forested areas, the Blue-tailed Hummingbird can also be found in other habitats, such as mountain scrub, grasslands, and gardens. In human-modified environments, the bird may visit flowering plants and feeders in urban and suburban areas.

Movements and Migration

Unlike many bird species, the Blue-tailed Hummingbird is not known to undertake long-distance migrations. Instead, it tends to remain in the same general area year-round, moving locally in response to changes in food availability and other environmental factors.

During breeding season, male Blue-tailed Hummingbirds establish territories and defend them against other males. Females visit these territories to mate and lay their eggs.

After breeding season, territories may dissolve, and birds may move more freely in search of food. In areas where the bird’s habitat is affected by seasonal drought, such as in parts of Central America, birds may move to more favorable locations during the dry season.

In some cases, this may result in temporary fluctuations in populations of the bird across its range.

Conservation Efforts

The Blue-tailed Hummingbird is considered to be a species of Least Concern based on its population size and stable population trend. However, as with many bird species, it is still subject to a range of threats that could impact its long-term survival.

One of the primary threats to the Blue-tailed Hummingbird is habitat loss and fragmentation. Deforestation and urbanization are the leading causes of habitat loss, and as these activities continue to expand throughout the bird’s range, populations may become isolated and more vulnerable to extinction.

Other threats to the Blue-tailed Hummingbird include the introduction of non-native plant species, which can reduce the availability of nectar-producing plants, and the use of pesticides and other chemicals, which can harm both the bird and its food sources. Conservation efforts for the Blue-tailed Hummingbird focus primarily on protecting its natural habitat.

These efforts include the establishment of protected areas, such as national parks and reserves, the restoration of degraded habitats, and the management of human activities to reduce their impact on the bird and its habitat. Efforts are also being made to educate local communities about the importance of preserving biodiversity and conserving natural resources.

This includes working with farmers and other landowners to promote sustainable land-use practices that benefit both humans and wildlife.


The Blue-tailed Hummingbird is a fascinating bird species that is well-loved by birders and nature enthusiasts alike. Although it faces several threats to its survival, the bird’s relative adaptability and stable population trend give hope for its continued survival.

By working to protect its habitat and conserve natural resources, we can help ensure that this beautiful bird remains a valued part of the natural world for generations to come.

Diet and Foraging

The Blue-tailed Hummingbird is a small bird with a high metabolic rate, which means it needs to consume vast amounts of food to meet its energy requirements. This bird species feeds primarily on nectar, both to fuel its high-intensity flight and to support its overall daily energy needs.


The Blue-tailed Hummingbird has a unique feeding mechanism that is adapted to its nectar-rich diet. The bird’s bill is long and thin, with a groove running down the center that helps it to grasp flowers and extract nectar with its long, forked tongue.

The bird’s tongue is also highly adapted to its feeding habits. The tongue is split at the tip and lined with small, hair-like projections that help it to lap up nectar from flowers more efficiently.

In addition to feeding on nectar, the Blue-tailed Hummingbird may also occasionally consume small insects and spiders, which provide a protein source to support its overall metabolic needs. These items may be caught in mid-air or plucked from flower blossoms.


The Blue-tailed Hummingbird is a generalist feeder, which means it can consume nectar from a wide variety of flowering plants. Some of its preferred nectar sources include flowering shrubs and trees such as Inga, Heliconia, and Jacaranda, as well as small herbaceous plants such as salvia and lantana.

The bird’s feeding preferences may vary depending on the time of year and the available resources in its habitat, and it may move between different flower types and locations in search of food.

Metabolism and Temperature Regulation

As a small bird with a high metabolic rate, the Blue-tailed Hummingbird must maintain a constant body temperature to support its energy-intensive lifestyle. To achieve this, the bird has several adaptations that are unique to its species.

One of the key adaptations is its ability to enter a state of torpor, which is a type of temporary hibernation that helps the bird conserve energy during periods of low food availability. During torpor, the bird’s metabolism slows down significantly, and its body temperature drops to near-ambient levels.

In addition to torpor, the Blue-tailed Hummingbird also has a high respiratory rate and a rapid heartbeat, which help it to quickly produce and circulate energy to support its flight and other activities.

Sounds and Vocal


The Blue-tailed Hummingbird is a relatively quiet species compared to other birds, but it does produce several distinctive vocalizations that are used for communication and territorial displays.


The bird’s most common vocalization is a sharp, metallic chip or trill, which it uses to defend its territory and attract mates. During territorial disputes, males may produce rapid, high-pitched trills that are intended to intimidate other males and assert their dominance.

Females also produce vocalizations, including a soft, twittering sound that is used during courtship displays. Juvenile birds may produce a variety of chirps and whistles as they establish their own territories and learn to communicate with other birds in their local population.


The Blue-tailed Hummingbird is a captivating bird species that is well-loved for its unique appearance and high-speed flight. By feeding primarily on nectar and insects and having a high metabolism, this bird species supports pollination and controls insect populations in its natural ecosystem.

By understanding its feeding habits, vocal behavior, and unique adaptations, we can gain a better appreciation for this bird and the important role it plays in the natural world.


The behavior of the Blue-tailed Hummingbird is complex and involves several key components, including locomotion, self-maintenance, agonistic behavior, and sexual behavior.


The Blue-tailed Hummingbird is an agile and acrobatic flier, capable of hovering, flying forwards and backwards, and maneuvering quickly through dense vegetation. Its wings beat at an incredibly high rate of up to 80 beats per second, allowing it to generate enough lift to stay airborne and maintain its position in mid-air while feeding.

Self Maintenance

As with all birds, the Blue-tailed Hummingbird engages in a range of self-maintenance behaviors, including preening, bathing, and resting. Preening involves the bird using its beak and tongue to clean and arrange its feathers, while bathing may involve splashing in water or rain to clean its feathers and cool its body.



The Blue-tailed Hummingbird is a territorial bird species that engages in agonistic behavior to defend its territory and resources from other birds. During territorial disputes, males may engage in physical displays such as hovering in front of each other, flashing their colorful feathers, and making aggressive vocalizations.



The Blue-tailed Hummingbird is a polygynous bird species, which means that males may mate with multiple females during breeding season. Male birds establish territories that contain suitable nesting sites and food resources, and then attempt to attract females to mate with.


Breeding season for the Blue-tailed Hummingbird varies depending on its geographic location, but generally, it occurs between February and August each year. During breeding season, males establish territories and display their colorful feathers and vocalizations to attract females.

Females will choose a mate based on several factors, including the quality of the male’s territory, his ability to defend it, and the quality of his plumage. Once a female has chosen a mate, she will build a small, cup-shaped nest out of plant materials and lay one to three eggs.

Both males and females take part in caring for the eggs and young, with females incubating the eggs and males assisting with feeding and defense. The young birds will fledge after approximately three weeks, at which point they will become independent and begin to explore their environment.

Demography and Populations

The Blue-tailed Hummingbird is a relatively common bird species throughout its range, with relatively stable populations and no major population declines. However, as with many bird species, it is still vulnerable to threats such as habitat loss, climate change, and other human impacts.

Conservation efforts for the Blue-tailed Hummingbird focus on protecting its natural habitat and promoting sustainable land-use practices that benefit both the bird and local communities. Efforts are also being made to raise public awareness about the importance of conserving biodiversity and preserving natural resources.


The Blue-tailed Hummingbird is a captivating bird species that is admired for its unique physical and behavioral characteristics. By gaining a better understanding of its behavior, breeding patterns, and demographic trends, we can appreciate the bird’s role in its natural ecosystem and work to protect it for future generations.

In conclusion, the Blue-tailed Hummingbird is a fascinating bird species that is characterized by its unique physical features, remarkable behaviors, and ecological role. It is an adaptable

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