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Great Spotted Woodpecker
Primary flight feather (remiges), likely P4 or P5

Great Spotted Woodpecker

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Piciformes, Family: Picidae, Genus: Dendrocopos, Species: Dendrocopos major

AI-generated identification · may be incorrect

Family: Picidae (Woodpeckers, Piculets, Wrynecks)

Shape
Asymmetrical vane, significantly tapered towards the tip, relatively narrow and elongated with a slightly curved rachis.
Size
Approximately 7-9 cm (2.7-3.5 inches) long, consistent with the mid-sized primaries of an adult Great Spotted Woodpecker.
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Description

A medium-sized, striking woodpecker with black and white plumage and a distinct red undertail. Males and juveniles also feature red on the head. Known for its powerful drumming on wood.

Colour & Pattern

Deep brownish-black/sooty black base with bold, starkly contrasting white oval spots (windows) along both the inner and outer vanes. The spots align to form stripes when the wing is closed.

Barb Structure

Tightly interlocked pennaceous barbs providing the rigidity necessary for flight; plumulaceous (fluffy) downy barbs at the base (superior umbilicus) for insulation.

Rachis & Barb Pattern

Rachis is thick, dark brown to black on the dorsal side, and lighter/ventrally grooved. Barbs are densely packed; white pigment is localized to create clean-edged spots rather than bars.

Texture & Surface

Smooth, stiff, and somewhat glossy on the dorsal surface; the vane is firm to the touch due to the interlocking barbules required for aerodynamic stress.

Feather Placement

Wing. The distinct asymmetry (one side of the vane narrower than the other) confirms its role as a primary flight feather, which provides lift and thrust.

Key Features

Bold white 'polka dot' spotting on a black ground color, asymmetrical flight feather shape, and a dark, sturdy rachis.

Habitat

Highly adaptable, found in deciduous, coniferous, and mixed woodlands, as well as parks and mature gardens with large trees for nesting.

Geographic Range

Widespread across the Palearctic, from Great Britain across Europe and Northern Asia to Japan and parts of North Africa; non-migratory but prone to irruptions.

Ecological Role

Primary cavity nester; they create holes that are vital for other species like tits, owls, and bats. They also control wood-boring insect populations.

Similar Species

Lesser Spotted Woodpecker (Dryobates minor) feathers are much smaller; Middle Spotted Woodpecker (Dendrocoptes medius) feathers are nearly identical but the bird's range is more restricted.

Interesting Facts

Great Spotted Woodpeckers use their brain-cushioning skulls to drum up to 20 times per second. They are also known to wedge pine cones into 'anvils' (cracks in bark) to extract seeds efficiently.

Cultural Significance

Woodpecker feathers have historically been admired in European folk art. Unlike raptor feathers, they were not widely used in the commercial millinery trade but are favorites for nature collectors.

Field Identification Tips

Look for these feathers at the base of large trees or near 'anvils' where woodpeckers spend time. The stark black-and-white contrast makes them easy to spot against soil or leaf litter.

Condition Notes

Good to Excellent. The feather shows minimal fraying at the tip and clean edges on the spots, suggesting it is relatively fresh, likely a result of a natural seasonal molt.