Blue Jay
Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Passeriformes, Family: Corvidae, Genus: Cyanocitta, Species: C. cristata · Corvidae (Crows, Jays, and Magpies) · Primary flight feather (Remex), likely from the mid-to-outer wing (P5-P8 range).
Species
Cyanocitta cristata
Feather Type
Primary flight feather (Remex), likely from the mid-to-outer wing (P5-P8 range).
Family
Corvidae (Crows, Jays, and Magpies)
Shape
Asymmetrical with a narrower leading edge and a broader trailing edge; slightly curved along the rachis with a rounded tip.
Size
Approximately 4.5 to 5.5 inches (11-14 cm) in length; consistent with the primary flight feathers of an adult Blue Jay.
Rarity
Very Common; widespread and easily observed throughout its range.
Color & Pattern
Bright cerulean to cobalt blue on the dorsal (upper) surface, which is a structural color (not pigment). The ventral (under) surface is a duller, matte grey. The rachis is dark, nearly black.
Barb Structure
Pennaceous (firm and interlocked) for the majority of the vane to provide lift; plumulaceous (fluffy) at the very base (calamus area) for insulation.
Texture & Surface
Smooth and somewhat stiff on the blue surface; the leading edge is very rigid to withstand wind pressure, while the trailing edge is slightly more flexible.
Description
This is a primary wing feather from a Blue Jay, a medium-sized songbird known for its striking blue plumage, prominent crest, and rowdy behavior. The blue color is structural, caused by light scattering within the feather cells rather than blue pigment. Blue Jays are highly intelligent corvids with complex social structures and a diverse vocal repertoire including mimicry of hawk calls.
Key Features
The vivid 'Blue Jay blue' coloration on the outer vane and the distinct asymmetry characteristic of primary flight feathers of a passerine.
Habitat
Deciduous and mixed forests, edge habitats, parks, and residential gardens with mature trees.
Geographic Range
Eastern and Central North America, from southern Canada down to the Gulf of Mexico and Florida; year-round resident in most of its range.
Condition Notes
Fair to Good. There is significant 'zipper' separation (unhooked barbicels) along the trailing edge, likely due to handling or the feather being a naturally molted specimen exposed to the elements.
Interesting Facts
Blue Jays are famous for their intelligence; they have been observed using tools in captivity and frequently 'tease' predators like owls and hawks to drive them out of their territory.
Ecological Role
High ecological importance as 'forest planters'; Blue Jays cache thousands of acorns and nuts each year, many of which are never recovered and grow into new trees.
Similar Species
Steller's Jay (darker, inkier blue/black), Florida Scrub-Jay (duller blue, no crest influence), or Mountain Bluebird (lacks the dark rachis and structural depth of jay feathers).