Blue Jay
Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Passeriformes, Family: Corvidae, Genus: Cyanocitta, Species: Cyanocitta cristata · Corvidae (Crows, Jays, and Magpies) · Tail feather (Rectrix), likely an outer position (R2-R5)
Species
Cyanocitta cristata
Feather Type
Tail feather (Rectrix), likely an outer position (R2-R5)
Family
Corvidae (Crows, Jays, and Magpies)
Shape
Slightly asymmetrical, elongated with a rounded tip, becoming broader toward the distal end.
Size
Approximately 4 to 5 inches (10-13 cm) in length; width approximately 0.75 inches. This is consistent with the lateral tail feathers of an adult Blue Jay.
Rarity
Very Common; one of the most recognizable and abundant birds in New Jersey and the Eastern US.
Color & Pattern
Boldly patterned with a crisp white terminal tip, followed by a dark blackish-blue subterminal band. The remainder of the vane shows a bright cerulean blue with subtle dark transverse barring (structural coloration). The underside is a duller, silvery-gray.
Barb Structure
Firmly interlocked pennaceous barbs on the distal two-thirds; plumulaceous (downy) structure at the base near the calamus for insulation.
Texture & Surface
Smooth and somewhat stiff on the pennaceous portion; the blue color is structural, giving it a slight glossy sheen when light hits at specific angles, while the white tip is matte.
Description
This feather is a classic tail element of the Blue Jay, a medium-sized songbird known for its crest, bold blue/white/black plumage, and vocal personality. The bird features a blue back, a black 'necklace,' and a white underbelly. They are intelligent corvids with a wingspan of about 13-17 inches.
Key Features
Large white terminal tip (spot), dark subterminal band, and vivid blue coloring with faint dark horizontal bars (structural ‘barring’ characteristic of corvids).
Habitat
Deciduous, coniferous, and mixed forests; commonly found in residential areas, parks, and oak orchards where acorns are plentiful.
Geographic Range
Resident throughout the Eastern and Central United States and Southern Canada; northernmost populations may undergo irregular southward migrations.
Condition Notes
Good condition; some minor fraying at the base and distal edge, likely a naturally molted feather. No significant fault bars visible.
Interesting Facts
Blue Jays don't actually have blue pigment; their color is 'structural,' caused by light scattering within the feather cells (Tyndall scattering). They are also known for mimicking the calls of Red-tailed Hawks to scare other birds away from feeders.
Ecological Role
Significant seed dispersers, particularly for acorns and beech nuts; they also act as 'sentinels,' alerting other species to the presence of predators like hawks or owls.
Similar Species
Bluebird feathers are much smaller and lack the white tip. Steller's Jay (Western US) has darker blue/black tones and lacks the large white tail spots. Belted Kingfisher tail feathers are shorter and have different white patterning.
Notes
New Jersey