The Majestic Grey Rumped Swiftlet: A Hidden Gem of the Bird World

The world of ornithology is filled with a myriad of fascinating and unique bird species. Yet, in the midst of this vast avian diversity, there are some species that stand out for their extraordinary characteristics and elusive nature. One such bird is the Grey Rumped Swiftlet, scientifically known as Collocalia sumbaensis.

The Grey Rumped Swiftlet, also commonly referred to as the "Grey Rump", is a small but mighty bird belonging to the Apodidae family of birds Grey Rumped Swiftlet. Its scientific name, Collocalia sumbaensis, has been derived from two Latin words: "collocalia" which means "cave-dweller" and "sumbaensis" which refers to the Sumba Island in Indonesia, where this bird is predominantly found.

This fascinating bird can be found across Indonesia and East Timor, but it is most commonly found in the Sumba Island, where it has gained local fame for its speed, agility, and unique features. Let's take a closer look at this magnificent creature and unravel its secrets.

Taxonomy and Physical Characteristics

The Grey Rumped Swiftlet is classified under the kingdom Animalia and belongs to the phylum Chordata and class Aves. It falls under the order Apodiformes, which includes swifts and hummingbirds. With a small body size of only 10-11 centimeters and a weight of around 20 grams, this bird is small but mighty.

Its body is predominantly black with a distinct grey rump, giving it its common name. The feathers on its body are glossy and smooth, giving it a sleek appearance. The wings of the Grey Rump are long and pointed, with a wingspan of around 24-27 centimeters, allowing it to maneuver and fly at incredible speeds Golden Babbler. Its beak is small and pointed, well-designed for its insectivorous diet.

Habitat and Distribution

The Grey Rumped Swiftlet can be found in a variety of habitats, including forests, coastal areas, and cliffs. However, it is most commonly found in its preferred habitat- caves and rocky cliffs. These birds are excellent flyers and are known for their incredible aerobatic skills. They have been observed soaring and gliding over forests and coasts, catching insects mid-air with their impressive hawking feeding method.

This bird has a relatively narrow geographic distribution, with most of its population concentrated in Sumba Island, Indonesia. It is also found in some parts of East Timor, but sightings in other parts of Indonesia are rare. The Sumba Island, with its caves and cliffs, provides the perfect nesting and roosting sites for the Grey Rumped Swiftlet, making it an ideal location for this bird to thrive.

Feeding and Hunting

The Grey Rumped Swiftlet is a skilled hunter that relies on its swift flight and excellent eyesight to feed on its prey. As an insectivorous bird, it primarily feeds on flying insects such as flies, mosquitoes, and beetles. Its hawking feeding method involves catching insects on the wing, flying low over vegetation or water bodies.

These swifts have a unique feeding behavior, where they hunt in large flocks, often numbering in the hundreds. This feeding strategy not only allows them to catch a large number of insects but also acts as a defense mechanism against predators, making it difficult for aerial predators to catch a single swiftlet in the midst of a large group.

Conservation Status and Threats

The Grey Rumped Swiftlet is currently classified as a species of Least Concern on the IUCN Red List. However, their population is slowly declining due to various threats such as habitat loss, disturbance of nesting sites, and hunting for bird's nest soup. In some parts of its range, the bird's nest is considered a delicacy and is highly sought after, further endangering this species.

To conserve this bird, efforts are being made to protect its habitats and nesting sites, especially in the Sumba Island. The local government and conservation organizations are also working towards educating the public about the crucial role that this bird plays in the ecosystem and the need to protect it.

A Hidden Gem of the Avian World

The Grey Rumped Swiftlet may not be as renowned as other birds, but its unique features and mesmerizing flying abilities make it a hidden gem in the avian world. Its presence in the Sumba Island not only adds to the island's biodiversity but also serves as a significant tourist attraction for birdwatchers and nature lovers.

With its sleek and glossy appearance, impressive hunting skills, and important role in the ecosystem, the Grey Rumped Swiftlet is truly a magnificent bird that deserves recognition and protection. Next time you're in Indonesia, make sure to keep an eye out for this amazing creature, soaring high in the sky, and appreciate its contribution to the world of birds.

Grey Rumped Swiftlet

Grey Rumped Swiftlet


Bird Details Grey Rumped Swiftlet - Scientific Name: Collocalia sumbaensis

  • Categories: Birds G
  • Scientific Name: Collocalia sumbaensis
  • Common Name: Grey Rumped Swiftlet
  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Aves
  • Order: Apodiformes
  • Family: Apodidae
  • Habitat: Forests, coastal areas, cliffs
  • Eating Habits: Insectivorous
  • Feeding Method: Hawking
  • Geographic Distribution: Indonesia, East Timor
  • Country of Origin: Indonesia
  • Location: Sumba Island
  • Color: Black body with grey rump
  • Body Shape: Small bird with slender body and long wings

Grey Rumped Swiftlet

Grey Rumped Swiftlet


  • Length: 10-11 cm
  • Adult Size: Small
  • Age: Unknown
  • Reproduction: Unknown
  • Reproduction Behavior: Unknown
  • Migration Pattern: Non-migratory
  • Social Groups: Unknown
  • Behavior: Unknown
  • Threats: Habitat loss, disturbance
  • Conservation Status: Data Deficient
  • Unique Features: Grey rump
  • Fun Facts: The Grey Rumped Swiftlet is endemic to Sumba Island, Indonesia
  • Reproduction Period: Unknown
  • Hive Characteristics: Unknown
  • Lifespan: Unknown

The Majestic Grey Rumped Swiftlet: A Hidden Gem of the Bird World

Collocalia sumbaensis


The Fascinating Grey Rumped Swiftlet: A Little Bird with a Big Mystique

The world of birds is home to a diverse range of species, each with its unique set of characteristics and behaviors. And one such intriguing bird is the Grey Rumped Swiftlet.

With its small size and elusive nature, the Grey Rumped Swiftlet has managed to maintain an air of mystique, leaving many questions about its life history and behaviors unanswered. But what do we know about this fascinating bird? Let's explore the world of the Grey Rumped Swiftlet and discover its unique features and intriguing secrets DatuSarakai.Com.

The Basics: Size, Age, and Reproduction

The Grey Rumped Swiftlet is a small bird, measuring only 10-11 cm in length. Its adult size is categorically labeled as "small," making it one of the smallest birds in its family. Unfortunately, the scientific community has not yet determined the average lifespan of the Grey Rumped Swiftlet. Its age, reproduction period, and reproductive behavior remain a mystery, adding to the allure of this elusive bird.

Non-Migratory Habits and Unknown Social Groups

One of the most distinctive features of the Grey Rumped Swiftlet is its non-migratory behavior. Unlike many other bird species that embark on long-distance migrations, this swiftlet does not follow a regular migration pattern. Instead, they are known to remain in their place of origin throughout the year.

Additionally, the social habits of the Grey Rumped Swiftlet are also shrouded in mystery. Its social groups and behaviors within these groups are largely unknown, making it challenging for scientists to understand their relationships and interactions with each other Golden Tanager.

The Secretive Behavior of the Grey Rumped Swiftlet

The elusive nature of the Grey Rumped Swiftlet extends to its behavior as well. This bird's behavior is little studied, and thus, much of it remains a mystery. However, from the few observations that have been made, it appears that the Grey Rumped Swiftlet roosts and nests in dark, inaccessible areas.

It is often found in caves, crevices, or even abandoned buildings, making it difficult for researchers to observe and study their behaviors. This secretive behavior has contributed to the many unknowns surrounding the Grey Rumped Swiftlet.

The Threats to the Grey Rumped Swiftlet

Like many other species, the Grey Rumped Swiftlet faces various threats to its survival. The primary threat facing this bird is habitat loss. Deforestation and conversion of land for agriculture and development have greatly reduced the available habitat for the Grey Rumped Swiftlet.

Moreover, human disturbance, such as tourism and industrial activities, has also contributed to the decline in the species' population. With their elusive nature, this bird is easily disturbed by human activity, making it challenging for them to thrive.

Data Deficient Conservation Status and the Importance of Research

The International Union for Conservation of Nature (IUCN) has categorized the Grey Rumped Swiftlet as "Data Deficient," highlighting the lack of information available about this species. The scarcity of data makes it challenging to assess the population size and trend of the Grey Rumped Swiftlet accurately.

Therefore, it is imperative to conduct further research on this bird species to better understand its behaviors, social groups, population, and distribution. Only then can effective conservation plans be developed to safeguard this iconic species.

The Unique Grey Rump and Other Fun Facts

Despite all its unknowns, one unique feature of the Grey Rumped Swiftlet is its grey rump, which sets it apart from other members of the swiftlet family. This feature is also the source of its common name, making it easily recognizable in the wild.

Additionally, the Grey Rumped Swiftlet is endemic to Sumba Island, Indonesia, making it a vital part of the island's biodiversity. It's a well-known fact that Indonesia is home to a rich variety of flora and fauna, and the Grey Rumped Swiftlet adds to this colorful and diverse ecosystem.

The Mysterious Hive Characteristics of the Grey Rumped Swiftlet

Another unknown aspect of the Grey Rumped Swiftlet is its hive characteristics. Unlike other swiftlet species, which are known for building complex and intricate nests, there is little information available about the nest structures and materials used by this particular bird.

Further study and research are needed to discover the unique hive characteristics of the Grey Rumped Swiftlet, which would provide valuable insights into this species' life history and behavior.

In Conclusion

In conclusion, the Grey Rumped Swiftlet is a remarkable and incredibly mysterious bird species. Despite its unknowns, it is clear that this bird plays a significant role in the ecosystem of Sumba Island, Indonesia, and it is essential to prioritize its conservation.

Through further research and understanding of the Grey Rumped Swiftlet, we can gain valuable insights into its behaviors, social groups, and hives, which would aid in developing effective conservation measures. Let's work together to uncover the mysteries surrounding this fascinating bird and ensure its survival for generations to come.

Collocalia sumbaensis

The Majestic Grey Rumped Swiftlet: A Hidden Gem of the Bird World


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