Birds diurnal

Blue-throated Mountain-gem

Lampornis clemenciae

Meet the 'Giant of the Canyons.' With its shimmering sapphire throat and bold white-tipped tail, the Blue-throated Mountain-gem is a breathtaking visitor to the high-altitude gardens of the Southwest.

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Quick Identification

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Size

Length: 4.5–5 in (11.5–12.5 cm); Wingspan: 6.5–7 in (16.5–18 cm); Weight: 0.2–0.3 oz (6–9 g)

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Colors

Dull green upperparts and greyish underparts. Males have a brilliant sapphire-blue throat. Both sexes feature a bold white stripe behind the eye and large, white-tipped outer tail feathers.

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Key Features

Brilliant iridescent blue throat (gorget) on males
Bold white stripe behind the eye and dark cheek
Large, dark tail with conspicuous white corners
Distinctive, loud, high-pitched 'seet' call
Significantly larger than common garden hummingbirds

When You’ll See Them

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Activity pattern diurnal

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Peak hours 6-10 AM, 4-7 PM

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Season May-September (US), Year-round (Mexico)

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Diet A mix of floral nectar from tubular flowers and protein-rich insects. They are particularly fond of agave, penstemon, and salvia. They also 'hawk' for insects in mid-air or glean them from leaves.

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Habitat Shady mountain canyons near water, oak-pine woodlands, and high-altitude suburban gardens in the Southwest US and Mexico.

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Behavior

The Blue-throated Mountain-gem is a bird of presence and personality. Often referred to as the 'Giant of the Canyons,' it is one of the largest hummingbirds found in North America. Unlike the frantic, high-speed maneuvering of smaller species, the Mountain-gem has a slightly slower, more deliberate wingbeat. They are highly territorial and will aggressively defend a preferred feeder or a patch of nectar-rich flowers, often chasing away smaller hummingbirds with a series of sharp, whistling calls.

These birds are remarkably vocal, which is unusual for hummingbirds. Males often sing from high, exposed perches to establish their territory. Interestingly, they show a high degree of site fidelity, often returning to the exact same nesting spot year after year. Females are known for their architectural skills, sometimes building a new nest directly on top of an old one, creating a 'tower' of moss and spiderwebs over several seasons.

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Camera Tips

To capture the stunning iridescent blue of the male's throat, your camera needs to be positioned with the sun behind it. Because the blue color is structural (meaning it depends on the angle of light), the gorget will appear black if the bird is in shadow or backlit. Aim your camera at a 45-degree angle to a feeder or a cluster of scarlet flowers to catch that 'flash' of sapphire as the bird moves its head. Using a camera with a high frame rate is essential; while they are large, their movements are still lightning-fast.

These birds are creatures of habit and often use the same 'sentinel perches' between feeding bouts. If you notice a bird sitting on a specific bare twig or clothesline, mount your camera there. For the best backyard footage, use a tripod-mounted setup focused on a sugar-water feeder with a perching ring. Blue-throated Mountain-gems are more likely to land and sit while drinking compared to smaller species that prefer to hover, giving you a much better window for a crisp, clear shot.

Because they frequently nest on man-made structures like porch eaves, hanging wires, or even inside sheds, you may have a unique opportunity for 'nest-cam' footage. If you find a nest, place your camera at least 8-10 feet away and use a zoom lens to avoid disturbing the mother. These birds are sensitive to movement near the nest, so a remote-triggered or AI-motion-sensing camera like those used by EverydayEarth is perfect for capturing the growth of chicks without human interference.

Finally, consider the sound. Since this species is so vocal, ensure your camera's microphone is unobstructed. Their loud, shrill 'seet' calls are a primary way to identify them before they even enter the frame. Early morning is the best time for both lighting and activity, as they are often the first hummingbirds to arrive at feeders as the sun rises over the canyon walls.

Similar Species

Species that look similar or are commonly confused with Blue-throated Mountain-gem.

Rivoli's Hummingbird

Slightly larger with a purple crown and green throat in males; lacks the Mountain-gem's broad white tail tips.

Lucifer Hummingbird

Much smaller with a noticeably curved bill and a purple, flared gorget.

Frequently Asked Questions

They are most active in the early morning (shortly after sunrise) and late afternoon. They are often the first hummingbirds to begin feeding in the morning and the last to finish before dark.

The best way is to provide large sugar-water feeders (4 parts water to 1 part white sugar) and plant native tubular flowers like Salvia, Penstemon, and Honeysuckle. They are also attracted to water features like misters or shallow basins.

They primarily consume nectar for energy and a variety of small insects and spiders for protein. They are known for catching gnats and flies out of the air while hovering.

They are common in suburban areas located in or near mountain canyons and wooded foothills at elevations between 4,500 and 11,500 feet, particularly in Arizona and New Mexico.

While both are large, the Blue-throated Mountain-gem has a huge tail with prominent white corners and a bright white stripe behind the eye, whereas the Rivoli's has a dark tail and a green iridescent throat.

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