Blue Jay
Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Passeriformes, Family: Corvidae, Genus: Cyanocitta, Species: C. cristata · Corvidae (Crows, Jays, and Magpies) · Tail feather (Rectrix)
Species
Cyanocitta cristata
Feather Type
Tail feather (Rectrix)
Family
Corvidae (Crows, Jays, and Magpies)
Shape
Relatively symmetrical, elongated, and slightly tapered with a rounded tip characteristic of corvid tail feathers.
Size
Estimated 4.5 to 6 inches (11.5-15 cm) in length, which is typical for an inner rectrix of an adult Blue Jay.
Rarity
Very Common
Color & Pattern
Bright cerulean blue ground color on the dorsal side with distinct black transverse bars (banding) and a prominent white terminal tip. The blue is structural (refraction), while the black is melanin-based. The underside (ventral) is a duller grey-black.
Barb Structure
Tightly interlocked pennaceous barbs throughout most of the vane, giving it a stiff and unified surface; minor plumulaceous (fluffy) barbs near the very base (calamus).
Texture & Surface
Smooth, glossy, and somewhat stiff. The surface exhibits a structural shimmer that changes intensity with the light angle.
Description
This is a signature tail feather of the Blue Jay, a medium-sized songbird known for its bold blue, white, and black plumage and prominent crest. Blue Jays are highly intelligent and vocal, often serving as forest 'sentinels' alert to predators.
Key Features
Electric blue coloration, bold black horizontal bars, and the distinctive white tip at the end of the feather.
Habitat
Found in mixed and deciduous forests, parks, residential backyards, and woodlots across much of central and eastern North America.
Geographic Range
Year-round resident across central and eastern North America, from southern Canada to Florida and eastern Texas. Some northern populations are partially migratory.
Condition Notes
Good condition; the barbs are mostly intact, though there is slight fraying at the tip and some separation along the trailing edge, likely from natural wear or the molting process.
Interesting Facts
The blue in this feather is not a pigment. If you crush the feather, the blue color disappears because it is produced by light interference in the feather's internal structure (cells act as prisms).
Ecological Role
Blue Jays are vital seed dispersers, particularly for oak trees, as they cache acorns in the ground and often forget where they buried them, allowing new trees to grow.
Similar Species
Steller's Jay (lacks the white terminal tip and is a darker, darker blue/black); Bluebird (feathers are much smaller and lack the black banding).