Introduction
The White-tailed Sabrewing (Campylopterus ensipennis) is a large hummingbird of north-eastern Venezuela and Tobago. It is a resident species of humid, forested mountain areas, where its iridescent green plumage, blue throat and conspicuous white outer tail feathers make it a distinctive bird to find.
Physical Description
The White-tailed Sabrewing is approximately 12–13 centimetres long and weighs around 10 grams. It is one of the larger hummingbirds in its range.
Adults have predominantly dark green plumage with an iridescent sheen. The male has a more strongly coloured blue to violet-blue throat, while the female is generally duller, with a greyer throat and less intense iridescence. Both sexes have a long, black, slightly curved bill and broad white outer tail feathers. The remaining tail feathers are darker, creating a noticeable contrast when the bird is perched or flying.
The species also has thickened, flattened shafts in some of the outer flight feathers, a characteristic associated with the sabrewings. Juvenile plumage is less well documented than that of adults, but young birds are expected to be duller and less strongly marked before acquiring full adult plumage.
Range and Habitat
The White-tailed Sabrewing has a restricted distribution in north-eastern Venezuela and on Tobago, Trinidad and Tobago. In Venezuela, it occurs in the Turimiquire Massif and on the Paria Peninsula. On Tobago, it is associated particularly with the Main Ridge and other remaining forested areas. Confirmed records from Trinidad are not generally accepted as part of the current distribution.
It inhabits mature lower and upper montane forest, cloud forest, mature secondary growth, forest edges, plantations and regenerating woodland. It has also been recorded in shaded coffee areas and around flowering shrubs, particularly where suitable forest remains nearby. Reported elevations range from about 100 to 1,830 metres, although the exact altitude varies between regions and reflects local habitat conditions.
The White-tailed Sabrewing is resident rather than migratory. Its distribution is naturally fragmented because suitable humid forest is limited to isolated mountain ranges and Tobago’s central ridge.
Where to See This Species
Main Ridge Forest Reserve, Tobago, Trinidad and Tobago
Main Ridge Forest Reserve is the most established birdwatching location for the species. The reserve protects extensive montane and lowland rainforest on Tobago, and the Gilpin Trace is specifically recognised as a place where White-tailed Sabrewings may be found. Look along forest trails, edges and flowering vegetation, particularly during quiet morning walks.
Nearby accommodation: Scarborough and nearby villages provide hotels, guest houses, villas and self-catering accommodation. Speyside is another practical base for exploring northern and eastern Tobago.
East Tobago National Park, Tobago, Trinidad and Tobago
The White-tailed Sabrewing has been documented from East Tobago National Park, which protects forested habitats in the island’s north-eastern region. Birders should concentrate on mature forest, clearings and forest edges with flowering plants. Local guidance is advisable because access and trail conditions can vary.
Nearby accommodation: Speyside and Charlotteville offer guest houses, small hotels, lodges and self-catering accommodation suitable for visitors exploring eastern Tobago.
El Guácharo National Park, Monagas and Sucre, Venezuela
El Guácharo National Park lies within the species’ Venezuelan range and protects montane forest in the Cordillera de Caripe. The White-tailed Sabrewing is listed among the park’s important bird species, although local abundance and accessibility can vary. Forest trails and areas of mature vegetation around the Caripe region offer the most appropriate habitat to investigate.
Nearby accommodation: Caripe is the nearest practical gateway, with small hotels, guest houses, inns and other basic visitor accommodation.
Behaviour and Diet
White-tailed Sabrewings are generally solitary and defend feeding areas. Males may use display perches and lek-like areas, and on Tobago courtship activity has been recorded throughout the year. A more pronounced breeding period occurs during the drier months, approximately February to April.
The species feeds mainly on nectar from flowering plants, including bromeliads and other tubular or nectar-rich flowers. It also takes small arthropods, such as insects and spiders, which provide protein and other nutrients. Feeding can occur in the forest canopy, along edges and in flowering shrubs in clearings or plantations.
Breeding records are best documented from Tobago. The female builds a relatively large, cup-shaped nest using plant material and other fibres, often placing it near a stream or in vegetation within forest. Typical clutches contain two white eggs. The female performs the incubation and feeds the nestlings with regurgitated food containing arthropods and nectar.
Identification Tips
- Look for a large, robust hummingbird with predominantly dark green, iridescent plumage.
- The male’s blue or violet-blue throat is especially noticeable in good light.
- The broad white outer tail feathers are the most useful field mark, particularly when the bird fans or flicks its tail.
- The long black bill is slightly curved, and the bird often appears heavier-bodied than smaller hummingbirds in the same habitat.
- The female is duller and greyer below, but still shows the characteristic white outer tail feathers.
- Distinguish it from other hummingbirds by combining its relatively large size, sabrewing-like build, blue-throated male and strongly contrasting white tail. Care is needed because lighting can make the iridescent plumage appear greener, bluer or darker than it really is.
Conservation Status
The White-tailed Sabrewing is currently assessed as Near Threatened. BirdLife International reports a suspected decreasing population, although the available population estimate is uncertain.
The principal threats are habitat loss and degradation caused by agricultural expansion, forest clearance, pasture, repeated burning, understorey removal and infrastructure development. On Tobago, severe forest damage from Hurricane Flora in 1963 caused a major historical decline, and the remaining population continues to depend on the protection and regeneration of forest on the Main Ridge and elsewhere on the island.
Protected areas, habitat restoration, monitoring and environmental education are important conservation measures. Effective management is particularly important in Venezuela, where suitable forest is affected by farming and burning, and on Tobago, where the species has a small island population vulnerable to hurricanes and further habitat loss.
Frequently Asked Questions
Where is the White-tailed Sabrewing found?
It occurs in north-eastern Venezuela, including the Turimiquire Massif and Paria Peninsula, and on the island of Tobago in Trinidad and Tobago.
Is the White-tailed Sabrewing migratory?
No. It is considered a resident species and does not undertake a regular long-distance migration.
What does the White-tailed Sabrewing eat?
Its diet consists mainly of nectar, supplemented by insects, spiders and other small arthropods. Nectar provides energy, while animal prey supplies additional protein and nutrients.
How can the species be identified?
The best field marks are its relatively large size, iridescent green plumage, the male’s blue throat, slightly curved black bill and conspicuous white outer tail feathers.
Where is the best place to see a White-tailed Sabrewing?
Tobago’s Main Ridge Forest Reserve, particularly the Gilpin Trace area, is one of the most recognised places to search. East Tobago National Park is another documented location.
What is the conservation status of the White-tailed Sabrewing?
The species is assessed as Near Threatened. Habitat destruction, forest degradation, agriculture, burning, infrastructure development and severe storms are among the main concerns.
References
- BirdLife International
- IOC World Bird List
- Journal of Field Ornithology
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