Hummingbird or Costa’s Hummingbird?

Here's how to tell the difference

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Hummingbird

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Costa’s Hummingbird

Hummingbird

Trochilidae

General appearance

Hummingbirds are small, vibrant birds with iridescent feathers. They are most noticeable for their quick, darting flying style and ability to hover in mid-air. Colors range widely, including greens, blues, purples, reds, and whites, often with a metallic sheen. They possess a long, thin beak perfect for sipping nectar from flowers.

Male vs female

Males are typically brighter and more colorful than females, often with a ‘gorget’ or patch of bright, iridescent throat feathers that females lack. Female hummingbirds have softer, muted coloration for camouflage when nesting. Males are also slightly smaller on average.

Juvenile

Juvenile hummingbirds resemble their mothers in colouring to stay camouflaged. They lack the iridescent throat patch of adult males. As they mature, juvenile males begin to develop more vibrant feathers, particularly on their throats, and by their first winter, most will have at least a few bright feathers indicative of their gender.

Size

2.0 - 10.2 in/0.1 - 0.8 oz

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How to tell the Hummingbird from the Costa’s Hummingbird

Visual differences

Costa's Hummingbirds are smaller (3.3-3.7 inches, 0.1-0.12 ounces) than typical hummingbirds (2-10 inches, 0.06-0.85 ounces). Males have a vibrant violet crown and gorget extending down their necks, unlike the broader color range and metallic sheen in general hummingbirds. Costa's females are green with white underbellies, lacking the vivid male throat color. They have a more compact body and shorter tail compared to the longer-bodied, variable-tailed general hummingbirds. Both share iridescent plumage and rapid wingbeats, but Costa's males can be identified by their distinct violet features.

Key differences and behavior

Hummingbirds are a diverse family, with Costa's Hummingbird being a specific example. While both are nectar feeders, Costa’s Hummingbirds are adapted to arid environments like the Sonoran Desert and can visit up to 2,000 flowers daily, showcasing higher site fidelity and territorial behavior during breeding. In contrast, hummingbirds in general are more widespread, inhabiting tropical to temperate zones, including urban areas. Costa’s males perform vocal looping dives, whereas hummingbirds typically rely on broader aerial displays. Both build small nests, but Costa's nest in arid shrubbery 2-8 feet high, unlike the varied foliage used by many hummingbird species. Diet-wise, both incorporate insects for protein, but Costa's focuses on desert plants. Despite the shared sugar-water attraction, Costa's may exhibit more territoriality at feeders due to their feisty nature.

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