Heliomaster constantii
The Plain-capped Starthroat (Heliomaster constantii) is a medium-sized hummingbird, typically measuring 11-12 cm (4.3-4.7 inches) in length and weighing a mere 4-6 grams. Males are particularly striking, boasting a brilliant, iridescent magenta to purplish-red throat patch (gorget) that shimmers intensely in the sunlight, contrasting sharply with their otherwise dull metallic green crown, nape, and upperparts. A key field mark is the distinctive 'plain cap' – a dull green crown without irides...
Primarily found in semi-open habitats, including forest edges, clearings, shaded coffee plantations, and thorn forests, typically at elevations ranging from 500 to 2,500 meters (1,600 to 8,200 feet).
Feeds primarily on nectar from a variety of long-tubed flowers, and supplements its diet with small arthropods (insects and spiders) caught in flight or gleaned from foliage.
Plain-capped Starthroats are diurnal and highly active, spending their days foraging for nectar and insects. Males often establish and aggressively defend foraging territories, especially around rich flower patches, engaging in aerial chases to repel intruders. Courtship involves elaborate aerial...
The Plain-capped Starthroat's primary breeding and resident range extends from western Mexico, specifically from Sonora south through the Pacific slope to Oaxaca, continuing southward through Central America. Its distribution covers Guatemala, El Salvador, Honduras, Nicaragua, Costa Rica, and wes...
Least Concern
- The Plain-capped Starthroat is named for its 'plain' dull green crown which lacks iridescence, contrasting with its incredibly vibrant throat patch. - Despite its relatively small size, it possesses a remarkably long, straight bill, perfectly adapted for probing deep into tubular flowers. - Lik...