
Eurasian Sparrowhawk (Common Sparrowhawk)
Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Accipitriformes, Family: Accipitridae, Genus: Accipiter, Species: Accipiter nisus
Family: Accipitridae (Hawks, Eagles, and Old World Vultures)
- Shape
- Asymmetrical vane with a distinct narrowing (emargination) on the leading edge. The tip is rounded, and the overall profile is elongated and slightly curved to facilitate lift during flight.
- Size
- Approximately 14-18 cm in length. This matches the typical range for a medium-sized Accipiter primary feather.
- Rarity
- Common. It is one of the most frequently encountered birds of prey in Central Europe.
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Description
This feather belongs to a small, agile bird of prey known for its short, broad wings and long tail. The Eurasian Sparrowhawk is a specialist hunter of small birds. The adults show a blue-grey back and barred underparts (rufous in males, grey in females). This specific primary feather's bold banding is a classic 'Accipiter' trait.
Colour & Pattern
Dark brownish-grey (sepia) ground color with 5-6 distinct horizontal cream-to-white bars (bands) on the inner web. The leading edge (outer web) is darker and more solid. The underside is paler than the upper surface.
Barb Structure
Tightly interlocked pennaceous barbs providing a rigid, aerodynamic surface. The lower base near the calamus shows some plumulaceous (downy) barbs for insulation. Barbules are intact with functional hooklets.
Texture & Surface
Smooth, stiff, and slightly glossy on the upper surface. The vane is highly rigid to withstand air pressure during the hawk's rapid, flapping-and-gliding flight style.
Key Features
Distinctive brown and white banding, asymmetrical vane for flight, and a clear notch (emargination) on the outer web which is a diagnostic feature of hawk primaries.
Habitat
Found in varied woodland habitats, including coniferous and deciduous forests, as well as gardens, parks, and urban areas where small bird prey is abundant.
Geographic Range
Resident and migratory throughout Europe, Asia, and North Africa. Highly common across the Czech Republic year-round.
Ecological Role
Apex predator of small woodland and garden birds. They play a vital role in maintaining the health of songbird populations by removing the weak and sick. They are sensitive to environmental toxins and serve as bioindicators.
Similar Species
Northern Goshawk (Accipiter gentilis) feathers are larger and heavier. Common Kestrel (Falco tinnunculus) feathers have more spotted or different banding patterns and lack the same degree of primary emargination.
Interesting Facts
The Eurasian Sparrowhawk exhibits extreme sexual dimorphism; females can be up to 25% larger than males, allowing the pair to hunt different-sized prey and reduce competition between them.
Condition Notes
Excellent condition. The barbs are well-aligned, suggesting a relatively fresh molt. There are no visible fault bars (stress lines) or significant wear at the tip.
Notes
Czech republic