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Blue Jay
Contour (Wing Covert); likely a Greater Primary Covert or Secondary Covert

Blue Jay

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Passeriformes, Family: Corvidae, Genus: Cyanocitta, Species: C. cristata

Family: Corvidae (Crows, Jays, and Magpies)

Shape
Generally symmetrical to slightly asymmetrical; rounded tip; ovate-oblong outline
Size
Approximately 1.5 to 2.5 inches (4-6 cm) in length; small relative to the bird's 10-inch body size
Rarity
Very Common; widespread and highly adaptable to human environments
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Description

This feather showcases the signature vibrant blue and black banding of the Blue Jay. These birds are known for their perky crests, white bellies, and intelligence. They are bold, vocal, and frequent visitors to backyard bird feeders.

Colour & Pattern

Brilliant cerulean to cobalt blue with distinct black transverse barring (banding); the color is structural, not pigment-based

Barb Structure

Pennaceous; tightly interlocked barbs creating a smooth, coherent surface; plumulaceous (fluffy) base near the calamus

Texture & Surface

Smooth, glossy, and slightly stiff; the blue surface has a structural sheen that changes slightly with light angle

Key Features

Bold black horizontal bars on a blue background; structural coloration; small size characteristic of wing coverts

Habitat

Mixed woodlands, deciduous forests, parks, residential gardens, and forest edges

Geographic Range

Eastern and central North America, ranging from southern Canada down to Florida and eastern Texas

Ecological Role

Omnivorous; acts as a seed disperser (especially for acorns) and an opportunistic predator; serves as an alarm system for other birds

Similar Species

Steller's Jay (darker blue, often lacks such distinct banding), Bluebird (smaller, lacks black bars), Western Scrub-Jay (lacks banding)

Interesting Facts

The blue in this feather is an optical illusion created by the scattering of light (Tyndall scattering); if you crushed the feather, it would look brown because the structure is destroyed

Condition Notes

Fair to Good; shows some minor ruffling at the base and slight separation of the barbs at the tip