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Blue Jay (Common Blue Jay)
Contour feather (Body feather)

Blue Jay (Common Blue Jay)

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

Family: Corvidae (Crows, Jays, and Magpies)

Shape
Symmetrical, broad-vane with a rounded to slightly pointed tip; typical teardrop-shaped outline of a body contour feather.
Size
Estimated 2.5 to 4.5 centimeters in length. This is consistent with the smaller size of upper-tail coverts or back contour feathers in this species.
Rarity
Very Common; one of the most widely recognized and frequently encountered birds in its range.
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Description

The Blue Jay is a large, crested songbird with a bold personality and striking blue, white, and black plumage. This feather represents the 'blue' of the jay, which is actually an optical illusion caused by the internal structure of the feathers scattering light.

Colour & Pattern

Brilliant cerulean to cobalt blue appearance. The color is structural rather than pigment-based (Tyndall scattering). Some feathers in this species feature black transverse bars, though this specific specimen highlights the solid iridescent sheen.

Barb Structure

The upper portion is Pennaceous (interlocked and smooth) for water shedding and protection, while the base is Plumulaceous (downy and fluffy) for thermoregulation.

Texture & Surface

Smooth, slightly glossy, and waxy to the touch. The surface displays a distinct structural shimmer that changes intensity with light angle.

Key Features

Distinctive structural blue coloration, presence of a downy base, and a relatively small, symmetrical contour shape compared to flight feathers.

Habitat

Found in a variety of habitats including mixed woodlands, deciduous forests, parks, and suburban gardens.

Geographic Range

Native to eastern and central North America; resident year-round from southern Canada through the eastern United States to the Gulf Coast.

Ecological Role

Important seed dispersers, particularly for acorns. They act as a 'forest alarm system,' alerting other animals to the presence of predators.

Similar Species

Steller's Jay (darker blue/black), Mountain Bluebird (lacks specific Corvidae texture), Indigo Bunting (much smaller feathers).

Interesting Facts

Blue Jays are highly intelligent and known to mimic the calls of hawks to scare other birds away from feeders. Their blue color is not a pigment (like melanin) but is created by light interference.

Condition Notes

Excellent condition; the vanes are intact without significant wear or fraying. No visible fault bars or parasite damage.

Blue Jay (Common Blue Jay) | Feather Identifier