Introduction
The Tooth-billed Hummingbird, Androdon aequatorialis, is a scarce hummingbird of the humid Chocó region. It is the only species in the genus Androdon and is best known for its unusual, finely serrated bill, which is particularly pronounced in adult males. Despite its localised distribution, it occupies a relatively broad range across eastern Panama, western Colombia and north-western Ecuador.
Physical Description
The Tooth-billed Hummingbird is approximately 13 centimetres long. Its plumage is comparatively subdued for a hummingbird, with bronzy-green upperparts, a metallic blue or bronzy crown, greyish underparts and a conspicuous dark streaking pattern on the throat. The tail is olive-grey at the base, darker towards the tips and marked with pale or white tips on the outer feathers.
Its most diagnostic feature is the bill. The bill is relatively long, narrow and slightly hooked, with fine tooth-like serrations along the cutting edges. Adult males generally have the most strongly developed serrations, with both the upper and lower bill tips showing hooked or toothed structures. Females have a less strongly hooked, more forceps-like bill, and the serrations are less pronounced. This bill dimorphism is more reliable for sex identification than broad differences in body colour.
Range and Habitat
The species occurs in humid forest from eastern Panama through the Chocó of western Colombia to north-western Ecuador, where it reaches southwards to the Pichincha region. It is not currently regarded as a species of Peru. The Tooth-billed Hummingbird is resident rather than migratory, although individuals may move locally in response to food availability.
It is associated mainly with wet lowland and foothill forest, including mature forest, forest edges and advanced secondary growth. Documented observations have commonly come from elevations of roughly 100 to 800 metres, although the species may occur locally outside this range. In western Colombia, it has been recorded in forested Andean foothills and often forages close to the ground, between approximately 1 and 3 metres above the forest floor.
The species is closely associated with the Chocó biogeographic region, one of the world’s most species-rich and heavily threatened rainforest areas. Habitat fragmentation and the conversion of forest to agriculture have reduced the continuity of suitable habitat across parts of its range.
Where to See This Species
Canandé Reserve, Esmeraldas Province, Ecuador
The Canandé Reserve protects humid lowland Chocó forest and lists the Tooth-billed Hummingbird among its recorded birds. The species is uncommon and localised, so sightings are not guaranteed, but intact forest, regenerating woodland and suitable flowering plants provide realistic habitat. Early starts and patient observation along forest trails are likely to be more productive than searching open, heavily disturbed areas.
Nearby accommodation: The reserve has on-site lodge accommodation, while the surrounding La Yuca and western Ecuador Chocó area provide additional lodge, guest-house and community-based accommodation options.
Farallones de Cali National Natural Park, Valle del Cauca, Colombia
The western slopes and Anchicayá sector of Farallones de Cali contain humid foothill and Chocó forest within the species’ documented Colombian range. The Tooth-billed Hummingbird has been recorded in the park area, particularly in the wetter forested valleys. Access is regulated, and visitors should use authorised routes and local guides where required.
Nearby accommodation: Cali is the principal practical base, with hotels and guest houses, while smaller accommodation options are available around the Anchicayá and Buenaventura approaches.
Behaviour and Diet
The Tooth-billed Hummingbird is generally encountered singly in dense forest, forest edge and secondary growth. It feeds at flowers with rapid wingbeats and can hover precisely while taking nectar. Its serrated bill may help it grip or manipulate prey, although the precise function of the serrations remains uncertain. The bill has also been discussed in relation to handling small arthropods and defending feeding opportunities.
Its diet consists of nectar supplemented by small insects and spiders. Arthropod prey provides an important source of protein and other nutrients, particularly when the bird is not obtaining all of its requirements from nectar.
The species is capable of fast, agile flight, but it often forages at relatively low levels in the vegetation. Detailed information about courtship, nesting and parental care remains limited. Although hummingbird females usually undertake nest construction and care for the young, a well-documented account of the Tooth-billed Hummingbird’s nest and breeding cycle is not currently available.
Identification Tips
- Look for a medium-sized, rather dull-coloured hummingbird in wet lowland or foothill forest.
- The combination of bronzy-green upperparts, greyish underparts, a darkly streaked throat and pale-tipped outer tail feathers is useful at close range.
- The bill is the key feature. It is long, narrow and hooked, with fine serrations that may be visible when the bird is perched or feeding.
- Adult males usually show the most obvious tooth-like bill structures. Females have a less strongly hooked and less heavily serrated bill.
- Do not rely on bright green, blue or violet plumage as the main identification feature. The species is generally less vividly coloured than many other hummingbirds.
- Its low foraging height in dense forest and advanced secondary growth can help distinguish it from hummingbirds that feed mainly in the canopy or at exposed flowering shrubs.
Conservation Status
The Tooth-billed Hummingbird is currently assessed as Least Concern. This category reflects its relatively broad geographic range rather than local abundance. The species is considered scarce and localised in much of that range, and it is associated with humid Chocó forests that have undergone extensive clearance and fragmentation.
The principal threats are forest loss, agricultural expansion, logging and the gradual degradation of remaining forest. Conservation measures include protecting large areas of Chocó forest, maintaining habitat corridors, restoring degraded land and supporting community-based forest management. Reserves such as Canandé and Farallones de Cali are important because they protect both remaining mature forest and regenerating habitat.
Frequently Asked Questions
Where does the Tooth-billed Hummingbird live?
It lives in humid forest from eastern Panama through western Colombia to north-western Ecuador, especially in lowland and foothill areas of the Chocó region.
Why is it called the Tooth-billed Hummingbird?
The name refers to the fine tooth-like serrations along the bill edges. These structures are especially prominent in adult males.
Is the Tooth-billed Hummingbird found in Peru?
Current range information places the species in eastern Panama, western Colombia and north-western Ecuador. Peru is not normally included in its accepted distribution.
What does the Tooth-billed Hummingbird eat?
It feeds mainly on flower nectar and supplements its diet with small insects, spiders and other small arthropods.
Is the Tooth-billed Hummingbird migratory?
It is regarded as a resident species. Local movements may occur, but there is no evidence of a regular long-distance migration.
Where is the best place to look for this species?
The best opportunities are in intact or regenerating humid Chocó forest, particularly in protected areas such as Canandé Reserve in Ecuador and Farallones de Cali National Natural Park in Colombia. The species is uncommon, so repeated visits and local knowledge may be necessary.
References
- BirdLife International
- IUCN Red List of Threatened Species
- K.-L. Schuchmann, Taxonomy and Biology of the Tooth-billed Hummingbird
Related posts
