Birds Active during the day

Garden Emerald

Chlorostilbon assimilis

iNaturalist eBird Wikipedia

A shimmering jewel of the Central American Pacific coast, the Garden Emerald is a tiny but feisty hummingbird that brings vibrant green color and high-energy antics to any backyard garden.

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0 Habitats

Quick Identification

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Size

7.5–8.5 cm (3–3.3 in) in length; weighs approximately 3.1–3.8 g (0.11–0.13 oz)

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Colors

Males are shimmering emerald green with a dark, blue-black forked tail. Females are metallic green above and pale greyish-white below, with a distinctive white stripe behind the eye.

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Key Features

Shimmering emerald green plumage (males)
Deeply forked, dark blue-black tail
Straight, all-black bill
Distinctive white post-ocular stripe on females
Small, compact build with rapid wingbeats

When You’ll See Them

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Activity pattern Active during the day

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Peak hours 6-10 AM, 3-5 PM

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Season Year-round

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Diet Primarily floral nectar from tubular flowers; also hunts small insects and spiders in mid-air or gleans them from leaves to obtain essential proteins.

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Habitat Commonly found in suburban gardens, forest edges, clearings, and light woodland; highly adaptable to human-altered landscapes.

public Geographic range

Where Does the Garden Emerald Live?

The Garden Emerald is a specialist of the Pacific lowlands and foothills of Central America. Its native range is concentrated along the Pacific slope from southwestern Costa Rica through the entirety of Panama, including various offshore islands like the Pearl Islands. It is a year-round resident within this tropical corridor, flourishing wherever flowering plants and edge habitats are present.

Basemap © OpenStreetMap contributors

2 Countries

82K km² Range

Least Concern Conservation

PA Panama CR Costa Rica

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iNaturalist / Verified observation data

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Behavior

The Garden Emerald is a spirited and highly active hummingbird, known for its bold personality despite its diminutive size. Often found darting between flowering shrubs, these birds are remarkably territorial. Males will aggressively defend prime nectar sources, using sharp, twittering calls and rapid aerial dives to chase away competitors, including hummingbirds much larger than themselves.

While they are frequent visitors to backyard feeders, they also utilize a foraging strategy known as 'trap-lining,' where they visit a specific circuit of flowering plants in a predictable order throughout the day. In residential areas, they have become well-adapted to human presence and are often seen hovering just inches away from porches or windows to investigate colorful objects.

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Camera Tips

To capture the stunning iridescence of the Garden Emerald, camera placement is everything. Position your AI-powered camera within 2 to 3 feet of a red or tubular-shaped flower, such as Porterweed (Stachytarpheta) or Firebush (Hamelia patens). Ensure the camera is at eye level with the blossoms, approximately 3 to 5 feet off the ground, to catch the bird in a hovering position rather than just a top-down view of its back.

Lighting is the 'secret sauce' for hummingbird photography. Try to orient your camera so the sun is behind the lens or at a slight angle to the side. This allows the sunlight to hit the male's metallic green feathers directly, creating that brilliant 'glow' that defines the species. If the bird is in the shade, it may appear dark or almost black. Early morning light (between 7 and 9 AM) provides the softest, most flattering illumination without harsh shadows that can obscure the bird's features.

Since these birds move at lightning speeds, use the highest shutter speed or 'Action' mode available on your camera settings. If your device supports burst mode or high-frame-rate video, enable it to increase the chances of catching the wings in a graceful position rather than a blur. In your backyard, a hummingbird feeder filled with a simple 4:1 water-to-sugar ratio is the best lure, but placing the camera near a 'perching twig' a few feet away from the feeder can result in beautiful, candid shots of the bird resting between feeds.

Similar Species

Species that look similar or are commonly confused with Garden Emerald.

Blue-tailed Emerald

Very similar, but the Garden Emerald has a more deeply forked tail and is geographically separated, found mostly on the Pacific slope.

Snowy-bellied Hummingbird

Easily distinguished by its bright white lower belly and vent, whereas the Garden Emerald is almost entirely green below.

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Frequently Asked Questions

Garden Emeralds are most active during the early morning hours (6:00 AM to 10:00 AM) and again in the late afternoon. This is when nectar production in flowers is often at its peak and the temperatures are cooler.

The best way to attract them is by planting native nectar-rich flowers like Porterweed, Hibiscus, and Heliconia. They are also easily drawn to hummingbird feeders filled with a clear sugar-water solution (4 parts water to 1 part white sugar).

Their diet consists mainly of nectar for energy, but they are also active hunters. They catch tiny gnats and flies in mid-air and pluck spiders from their webs to get the protein and minerals necessary for their high-metabolism lifestyle.

Yes, they are very common in suburban environments throughout Panama and southwestern Costa Rica. They adapt well to urban sprawl as long as there are gardens, parks, or flowering hedges available for foraging.

Look at the underparts: the Garden Emerald male is solid shimmering green from throat to belly, whereas the Snowy-bellied Hummingbird has a stark, brilliant white belly that contrasts sharply with its green chest.

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