Blue-Chested Hummingbird or Ruby-Throated Hummingbird?

Here's how to tell the difference

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Blue-Chested Hummingbird

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Ruby-Throated Hummingbird image 1
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Ruby-Throated Hummingbird

Blue-Chested Hummingbird

Polyerata amabilis

Also known as: Blue Chested Hummingbird

General appearance

The Blue-chested Hummingbird, a colorful creature, has a metallic green upper body. Its lower body varies between dark green and blue. It has bright white spots on its tail feathers and a slender, straight beak ideal for feeding on nectar.

Male vs female

Distinguishing between a male and female Blue-chested Hummingbird can be challenging as both sexes share the same colorations. However, males are usually more luminous and have more blue on their chests compared to their female counterparts.

Juvenile

Juvenile Blue-chested Hummingbirds resemble their adult counterparts, although their plumage may not be as vibrant. As they mature, their colors gradually become brighter. Differences between sexes are negligible during this stage of development.

Size

2.8 - 4.3 in/0.1 - 0.2 oz

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How to tell the Blue-Chested Hummingbird from the Ruby-Throated Hummingbird

Visual differences

The Blue-Chested Hummingbird (2.7-3.9 in, 0.13-0.17 oz) features metallic green upper parts with variable dark green to blue undersides and bright white tail spots. Its beak is slender and straight. In contrast, the Ruby-Throated Hummingbird (2.8-3.9 in, 0.07-0.21 oz) has iridescent green upper parts and white underparts, with males exhibiting a distinct ruby-red throat. Their tail is forked in males and rounded with white edges in females. Both have slender, straight beaks, but the ruby throat stands out in the male ruby-throated as a key identifier.

Key differences and behavior

The Blue-Chested Hummingbird and Ruby-Throated Hummingbird exhibit distinct behavioral traits. Blue-Chested Hummingbirds are short-distance migrants, frequently moving to find rich nectar sources and can form casual groups called leks, engaging in vocal displays to attract mates. They defensively guard their territories when nectar is scarce. Conversely, Ruby-Throated Hummingbirds migrate long distances and are solitary, except during courtship when males perform U-shaped flights to woo females. Blue-Chested Hummingbirds prefer humid lowland forests in Central and South America, while Ruby-Throated Hummingbirds favor semi-open habitats in eastern North America, avoiding dense rainforests during winter. Both species' diets are similar, focused on nectar and insects. For nesting, Blue-Chested Hummingbirds place nests lower (3-33 feet) using lichens, whereas Ruby-Throats nest higher (16-60 feet) camouflaging with lichens and leaves. Both females solely nurture the young.

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Ruby-Throated Hummingbird vs [Select a bird]