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Barn Swallow
Secondary flight feather (remex), likely from the mid-wing section (S3-S5).

Barn Swallow

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Passeriformes, Family: Hirundinidae, Genus: Hirundo, Species: H. rustica

Family: Hirundinidae (Swallows and Martins)

Shape
Relatively elongated and narrow with a slightly rounded tip and asymmetrical vanes; the inner vane is notably broader than the outer vane.
Size
Approximately 4-5 cm (1.6-2.0 inches) in length, which is within the typical range for the secondary feathers of small hirundines.
Rarity
Common (Abundant and widespread throughout its breeding and wintering range).
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Description

This feather represents the sleek aerial mastery of the Barn Swallow. In life, the bird displays a steel-blue back, rufous throat, and iconic deeply forked tail. It is a swift, agile flyer often seen performing acrobatic dives to catch insects in mid-air.

Colour & Pattern

Charcoal-grey to blackish base color with a distinctive white 'mirror' or subterminal spot on the inner vane. The rachis appears pale at the calamus, darkening distally.

Barb Structure

Pennaceous structure with tightly interlocked barbs; the distal portion shows some separation (fraying), while the base begins to show plumulaceous (downy) barbs for insulation.

Texture & Surface

Smooth and somewhat glossy on the upper surface to facilitate aerodynamic efficiency; stiff enough to hold its shape during flight but light enough for rapid maneuvering.

Key Features

The most diagnostic feature is the stark white patch or 'window' on the inner vane against the dark grey/blue-black ground color, characteristic of the white spots found on the tail and wing feathers of this species.

Habitat

Open areas including farmlands, meadows, and marshes, often near water where insects are plentiful. They frequently nest on man-made structures like barns, bridges, and eaves.

Geographic Range

One of the most widespread passerines, found across North America, Europe, Asia, and northern Africa during the breeding season, migrating to the Southern Hemisphere (South America, Africa, Australia) for winter.

Ecological Role

Vital insectivores that control populations of flying insects. Their presence is often used as an indicator of habitat quality and agricultural health.

Similar Species

Tree Swallows (lack the white spots on feathers) and Cliff Swallows (different wing feather profile and spot placement). The white 'tail window' pattern is unique among common North American swallows.

Interesting Facts

Barn Swallows are incredible migrants, with some individuals traveling over 6,000 miles between their breeding and wintering grounds. They almost exclusively build nests out of mud pellets collected in their beaks.

Condition Notes

Fair to Good. There is noticeable wear and separation of the barbs at the distal tip and along the margins, likely due to flight stress or contact with nesting materials before it was molted.