Introduction
The Bee Hummingbird, also known as the Zunzuncito, is Mellisuga helenae, a hummingbird endemic to Cuba and the smallest living bird species. Despite its minute size, it is an active pollinator with specialised hovering flight, rapid metabolism and striking sexual dimorphism.
Physical Description
The Bee Hummingbird measures about 5.1–6.1 cm in length and weighs approximately 1.6–2.6 g. Females are generally slightly larger and heavier than males.
Adult males are especially distinctive during the breeding season. They have bluish-green upperparts and a brilliant iridescent red to rose-pink head and throat, with elongated feathers forming a prominent gorget. The underparts are paler, and the short, straight bill is adapted for feeding from small flowers.
Females are less brightly coloured, with greenish or bluish-green upperparts and pale greyish-white underparts. Young birds and males outside the breeding season are duller and may resemble females, although males often retain more blue or iridescent colour on the head and upperparts.
The species has a compact body, narrow wings and a short tail. Its wings produce a noticeable buzzing sound in flight and beat more than 60 times per second during hovering.
Range and Habitat
The Bee Hummingbird is resident and endemic to Cuba, including the Isle of Youth. Its distribution is irregular and local rather than continuous across the islands.
It occurs in a variety of habitats, including semi-deciduous and evergreen woodland, forest edges, second-growth vegetation, pine forest, coastal scrub, swamp margins, mountain valleys and well-planted gardens. In western Cuba it is associated with limestone mogote landscapes, while important populations also occur in the Zapata region and parts of eastern Cuba. Records range from near sea level to mountainous areas, although the species is often found in lowland or foothill habitats where flowering plants are abundant.
The Bee Hummingbird is non-migratory. Local movements are likely to follow changes in flowering and food availability, but it does not undertake long-distance seasonal migration.
Where to See This Species
Ciénaga de Zapata National Park, Matanzas Province, Cuba
Ciénaga de Zapata is one of the most reliable documented areas for Bee Hummingbird in Cuba. The national park contains swamp woodland, semi-deciduous forest, mangroves, savannah and forest edges, and the species has been recorded nesting in several parts of the Zapata region. Local birding sites and flowering gardens around Pálpite, Santo Tomás, Soplillar and nearby settlements can be productive, particularly when flowering plants attract feeding birds.
Nearby accommodation: Playa Larga and the surrounding Bay of Pigs villages provide practical bases with guest houses, small hotels and self-catering accommodation.
Guanahacabibes Peninsula Biosphere Reserve, Pinar del Río Province, Cuba
UNESCO records the Bee Hummingbird as an endemic species of the Guanahacabibes Peninsula Biosphere Reserve. The reserve protects tropical dry forest, semi-deciduous and evergreen woodland, coastal scrub, mangroves and other habitats suitable for a small nectar-feeding hummingbird. Look along forest edges, flowering scrub and quiet tracks, preferably with a local guide familiar with the reserve.
Nearby accommodation: La Bajada and María la Gorda are the main gateway areas, with guest houses, hotels and camp-style accommodation available for visitors to the peninsula.
Behaviour and Diet
Bee Hummingbirds are active during daylight and spend much of the day moving rapidly between flowers, perches and sheltered vegetation. They are usually encountered singly, and males may defend feeding or display areas from other hummingbirds. The species can be difficult to follow because of its very small size, fast flight and tendency to disappear into dense vegetation.
Nectar provides most of the adult diet. The birds visit a wide range of small flowers and contribute to pollination as pollen is transferred between blossoms. They also take small insects and spiders, either by picking them from vegetation or catching them in the air. Invertebrates are especially important as a source of protein during breeding.
Breeding is generally reported from March to June, although timing may vary with local rainfall and flowering conditions. Males perform aerial courtship displays, including steep rises and rapid descents. The female builds the nest, incubates the eggs and feeds the young without assistance from the male.
The nest is a tiny open cup made from plant fibres, moss, lichen and other soft materials, held together with spider silk. A clutch usually contains two small white eggs. Incubation lasts roughly two to three weeks, and the young remain in the nest for approximately 18–38 days, depending on development and local conditions.
Identification Tips
- Look for a hummingbird barely larger than a large bee, measuring about 5–6 cm long.
- A male in breeding plumage shows a brilliant red or rose-pink head and throat, contrasting with bluish-green upperparts.
- Females are plainer, with greenish upperparts and pale underparts, and are slightly larger than males.
- The flight is extremely fast and agile, with prolonged hovering at flowers and a distinctive high-pitched buzzing sound.
- The short, straight bill and very small body help distinguish it from Cuba’s larger Cuban Emerald, which has a longer bill and a more substantial overall appearance.
- Check flowering shrubs, forest edges, gardens and lightly wooded areas rather than only dense forest interiors.
Conservation Status
The Bee Hummingbird is currently classified as Near Threatened on the IUCN Red List. Its population is considered to be declining, although a precise current population estimate is not required here because available figures are uncertain.
The principal concerns are habitat loss, degradation and fragmentation caused by forest clearance, agricultural expansion, fuelwood collection and other land-use changes. Because the species has a patchy distribution and depends on suitable flowering habitat, the loss of small woodland pockets may be significant even where larger protected areas remain.
Important conservation measures include protecting remaining native forest and scrub, maintaining flowering vegetation, restoring degraded habitat and managing protected areas effectively. Conservation planning should also support local research and monitoring, particularly in areas where the species occurs in small or isolated populations.
Frequently Asked Questions
What is the scientific name of the Bee Hummingbird?
The scientific name is Mellisuga helenae. The species is also widely known in Cuba as the Zunzuncito.
Where does the Bee Hummingbird live?
It lives only in Cuba and the Isle of Youth. It uses woodland, forest edges, second-growth vegetation, coastal scrub, swamp margins, gardens and other habitats with suitable flowers and small invertebrate prey.
Is the Bee Hummingbird the smallest bird in the world?
Yes. It is generally recognised as the smallest living bird species, with adults measuring about 5–6 cm long and weighing only a few grams.
What does the Bee Hummingbird eat?
It feeds mainly on flower nectar, supplemented by small insects and spiders. Nectar supplies energy for hovering flight, while invertebrates provide important protein, especially during breeding.
When is the best time to see a Bee Hummingbird?
The species is resident throughout the year, so it can potentially be seen in any season. Local sightings are more likely where flowering plants are abundant, and experienced local birding guides can improve the chances of finding this small and fast-moving bird.
Is the Bee Hummingbird endangered?
It is currently classified as Near Threatened rather than Endangered. Habitat loss and fragmentation are the main concerns, and continued protection of native Cuban woodland and flowering habitat is important for its long-term survival.
References
- BirdLife International
- Journal of Caribbean Ornithology
- UNESCO Man and the Biosphere Programme
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