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Blue Jay
Secondary flight feather (Remex)

Blue Jay

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

Family: Corvidae (Crows, Jays, and Magpies)

Shape
Slightly asymmetrical with a rounded tip; the inner vane is wider than the outer vane, typical of secondary feathers.
Size
Approximately 4.5 to 6 cm (1.8 to 2.4 inches) in length, which is standard for a mid-tier secondary feather of a medium-sized passerine.
Rarity
Common; one of the most widespread and easily recognized birds in its range.
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Description

A vibrant blue feather from an intelligent, crest-headed songbird. Blue Jays are known for their striking blue, white, and black plumage and their bold, sometimes mimetic vocalizations.

Colour & Pattern

Deep cerulean to cobalt blue on the outer web with faint, dark transverse barring (structural color). The inner web is a dark charcoal to blackish-brown. There is a prominent black subterminal band or trailing edge highlight.

Barb Structure

Mostly pennaceous and tightly interlocked with hooklets (barbicels) for flight efficiency, becoming plumulaceous (downy) at the very base.

Texture & Surface

Smooth, glossy, and slightly stiff to the touch. The blue surface has a structural sheen that changes slightly with the angle of light.

Key Features

Rich blue structural coloration coupled with fine dark horizontal barring and a distinct blackish inner vane.

Habitat

Deciduous, coniferous, and mixed forests; very common in residential areas, parks, and gardens with mature trees.

Geographic Range

Eastern and central North America, extending from southern Canada down to the Gulf of Mexico and west to the Rockies.

Ecological Role

Omnivorous; they play a vital role as seed dispersers (especially for acorns) and act as 'sentinels' by mobbing predators to alert other birds.

Similar Species

Steller's Jay feathers are darker/sooty blue with more prominent black barring; Bluebirds have smaller, thinner feathers without the dark barring.

Interesting Facts

Blue Jays don't actually have blue pigment; their feathers appear blue because of microscopic light-interference structures. They are also famous for mimicking the calls of Red-tailed Hawks.

Condition Notes

Good condition; the vane is mostly intact though there is some minor separation at the base (proximal end) and tip, suggesting a naturally molted feather.