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Yellow-billed Magpie
Tail feather (rectrix), specifically an outer tail feather showing the characteristic white tip

Yellow-billed Magpie

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Passeriformes, Family: Corvidae, Genus: Pica, Species: P. nuttalli

AI-generated identification · may be incorrect

Family: Corvidae (Crows and Jays)

Shape
Symmetrical vane with a gently rounded tip, elongated and gently tapering profile typical of corvid rectrices
Size
Approximately 7 to 9 inches long, consistent with the outer tail feathers of a medium-to-large sized corvid species
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Description

The Yellow-billed Magpie is a striking, highly social bird known for its extraordinarily long tail, contrasting black-and-white plumage, and brilliant yellow bill and eye-ring. It is one of the few bird species endemic to the state of California.

Colour & Pattern

Stunning structural iridescence showing deep metallic blue and greenish-black gloss along the pennaceous vanes, terminating in a distinct, crisp white tip at the distal end

Barb Structure

Tightly interlocked pennaceous structure along the main vane with firm barbules and hooklets, and a small plumulaceous tuft at the base

Rachis & Barb Pattern

Strong, central dark rachis that is moderately stiff and slightly curved, with dense barbs extending outward at a consistent angle creating a glossy sheen

Texture & Surface

Smooth, glossy, and firm texture with high structural rigidity and a reflective, metallic surface finish

Feather Placement

Tail (rectrix), specifically one of the graduated outer tail feathers of the magpie's long tail

Key Features

Striking metallic blue-black structural coloration contrasted sharply by a distinct white tip, combined with the elongated, tapered shape of a corvid tail feather

Habitat

Oak savannas, agricultural fields, open grasslands, and riparian woodlands with scattered tall trees for nesting and roosting

Geographic Range

Endemic exclusively to California, primarily inhabiting the Central Valley and surrounding foothills

Ecological Role

Acts as an important scavenger, seed disperser, and insect predator in oak savanna ecosystems, helping control agricultural pest populations

Similar Species

Black-billed Magpie (Pica hudsonia), whose feathers are nearly identical in structure and pattern but belong to a more widespread northern species; separated primarily by geographic provenance

Interesting Facts

Yellow-billed Magpies are known to be highly susceptible to West Nile virus, which caused massive population declines in the early 2000s. They build large, domed stick nests that are often reused or commandeered by other species.

Cultural Significance

Valued by indigenous peoples of California for ceremonial regalia and ornamentation, and studied extensively by ornithologists due to its unique restricted geographic distribution

Field Identification Tips

Look along the ground or under roost trees in oak savannas within the Central Valley of California, particularly following the post-breeding molt season in late summer

Condition Notes

Good overall condition with minor wear and slight fraying at the extreme base near the calamus, but vanes and structural coloration remain vibrant and largely intact

Yellow-billed Magpie | Feather Identifier