Glittering-bellied Emerald

Identification

The glittering-bellied emerald is a small hummingbird, with males measuring 9.5 to 10.5 cm and females 7.5 to 8.5 cm in length. Both sexes have a distinctive short, straight bill, though the colouring differs: males sport a red bill with a black tip, while females have black on the outer half and red on the inner. Males of the nominate subspecies display a dull bronzy-green forehead and crown, slightly golden-green upperparts, and a grass-green uppertail. Their most striking feature is the iridescent bronze to bronzy-green belly—the "glittering" that gives them their name—contrasting with a blue-green throat and upper breast. The tail is slightly forked and dark steely blue. Females are more subdued, with golden-green upperparts, grayish-white eye-streaks, and whitish throats that darken to pale brownish-gray on the breast and belly. Subspecific variation exists: C. l. berlepschi has pure rather than golden-green upperparts, while C. l. igneous displays glittering orange-gold speckles on the belly.

Range & Habitat

This species is found across much of south-central South America, including Argentina, Bolivia, Brazil, Paraguay, and Uruguay, with vagrant records from Chile and Peru. Different subspecies occupy distinct regions: C. l. pucherani inhabits eastern Brazil from Maranhão and Ceará south to Paraná; the nominate C. l. lucidus ranges through eastern Bolivia, Paraguay, and southwestern Brazil; and C. l. berlepschi occurs from southeastern Brazil through Uruguay into northeastern Argentina. The glittering-bellied emerald is highly adaptable, inhabiting semi-arid to somewhat humid, open to semi-open landscapes including scrublands, savanna, grasslands, forest edges, parks, and gardens. It ranges from sea level to 3,500 m in elevation but is most common between 500 and 3,500 m. Though generally sedentary, vagrancy has been documented.

Behaviour & Diet

Glittering-bellied emeralds are energetic foragers that feed on nectar by trap-lining—visiting a regular circuit of flowering plants. In addition to feeding openly at flower openings, they pierce the bases of some flowers to access nectar. They typically forage between 4 and 12 metres above ground and supplement their diet by hawking small insects from perches and occasionally taking insect honeydew. Males produce a high-pitched, cricket-like trill repeated at intervals, and give short, dry scratchy rattles ('trrrr' or 'krrr') while feeding or hovering. During agonistic encounters, they deliver a fast descending series of chirping notes.

Best Time & Places to See It

The glittering-bellied emerald breeds from at least August through February, making this the optimal season for observing breeding behaviour and nesting activity. The species is considered common throughout its range and is notably the most frequently seen hummingbird in its part of Argentina, making it relatively accessible to patient observers. Look for it in parks, gardens, plantations, and semi-open landscapes with flowering plants. Several protected areas within its range offer reliable viewing opportunities, and the species' adaptability to cultivated spaces means that gardens with appropriate flowering plants can attract them reliably.

Photography Tips

Photograph this species in parks and gardens where flowering plants attract them predictably. Males' iridescent bronze-green bellies display best in direct sunlight, so position yourself with light coming toward the camera to capture the glittering effect that defines the species. The bird's small size and typical foraging height of 4 to 12 metres above ground mean telephoto lenses are essential. Since they trap-line specific flowering plants, scout locations beforehand and wait near productive flowers. Early morning light often enhances the iridescent plumage. Their rapid, direct flight and frequent perching make action shots feasible, particularly when they hover at flowers or rest between foraging bouts.