Yellow-billed Magpie (California Magpie)

This stunning primary feather reflects the striking plumage of the Yellow-billed Magpie, a bird characterized by its lemon-yellow beak and eye-skin. The bird reaches 16-18 inches in length including its long tail. In flight, these white primary patches create a 'flashing' effect against the dark body.

Iridescent midnight blue to teal-black on the outer vane and distal portion of the inner vane. A large, stark white patch occupies the proximal half of the inner vane. The rachis is dark brown to black.

Pennaceous and tightly interlocked along the main vane for aerodynamic efficiency. Plumulaceous (downy) barbs are visible at the base near the calamus. The barbs are stiff and resilient.

The rachis is thick, rigid, and dark-pigmented. The barbs are densely packed, angled steeply toward the tip, and exhibit structural coloration (iridescence) that shifts from blue to green depending on light.

Smooth, glossy, and highly reflective on the iridescent portions. The white section has a more matte finish. The feather feels stiff and slightly oily to the touch for waterproofing.

Wing - Outer primary flight feather. The strong asymmetry (narrow leading edge) is a diagnostic feature used to split the air during flight.

Strong asymmetry, dark iridescent blue-to-black coloration, and the diagnostic large white 'window' on the inner vane.

Oak savannahs, riparian woodlands, and open grasslands with scattered trees. They are heavily dependent on large California oaks for nesting.

Endemic to California. Located strictly in the Central Valley, surrounding foothills, and the coastal ranges from San Francisco to Santa Barbara.

Omnivorous scavenger and predator. They play a role in pest control by eating insects and ticks, and act as a prey species for large raptors.

Black-billed Magpie (Pica hudsonia) feathers are nearly identical but that species typically inhabits colder climates and higher elevations. Blue Jay or Steller's Jay feathers lack the large white inner vane patches.

The Yellow-billed Magpie is one of only two bird species endemic to the continental United States. They are highly social and have been observed performing 'funerals' for deceased flock members.

Magpies feature in various folklore; while European magpies are often seen as omens, California magpies are celebrated as icons of the Central Valley. Possession of feathers from this species is strictly regulated.

Look for these feathers in late summer (molting season) under large valley oaks or near horse pastures where magpies frequently forage for insects.

Excellent condition. The vane is intact with no significant fraying or fault bars, suggesting it was naturally molted from a healthy adult bird.