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Barn Swallow
The image shows a full set of rectrices (tail feathers) and primary flight feathers. The longest feather on the right is an outer rectrix (likely R6).

Barn Swallow

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

Family: Hirundinidae (Swallows and Martins)

Shape
Highly asymmetrical vanes characteristic of flight and outer tail feathers. The outer tail feather is deeply tapered and elongated to form a fork (streamer), narrowing to a fine point.
Size
The longest outer tail feather measures approximately 7.5-10 cm (3-4 inches). This is consistent with an adult male Barn Swallow, which features longer streamers than females.
Rarity
Very Common
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Description

The Barn Swallow is a small, sleek bird with a deeply forked tail, rufous throat, and blue-black upperparts. They are known for their acrobatic flight as they catch insects mid-air.

Colour & Pattern

Glossy steel-blue to blackish-brown dorsal surface. The most diagnostic feature is the white subterminal spot or 'window' on the inner vane of the tail feathers, creating a white band when the tail is spread.

Barb Structure

Tightly interlocked pennaceous barbs on the distal portion for aerodynamic integrity. The base shows some plumulaceous (fluffy) downy structure for insulation.

Texture & Surface

Smooth, glossy, and aerodynamic. The dorsal surface has a slight metallic sheen (melanin-based iridescence) typical of swallows.

Key Features

White spots on the inner vanes of the tail feathers and the extreme elongation of the outer tail streamer.

Habitat

Open country near water, agricultural fields, meadows, and often near human structures like barns or bridges for nesting.

Geographic Range

Globally distributed across the Northern Hemisphere during breeding season; highly migratory, wintering in South America, Africa, Southern Asia, and Northern Australia.

Ecological Role

Insectivorous specialists; they play a vital role in controlling flying insect populations, including mosquitoes and agricultural pests.

Similar Species

Tree Swallow (lacks white tail spots), Cliff Swallow (squared tail), and species of Swifts (lack the distinct forked tail streamers).

Interesting Facts

Barn Swallows have benefited from human construction, almost exclusively nesting on man-made structures in many parts of their range today.

Condition Notes

The feathers appear to be in good condition, likely molted naturally. No significant fault bars or parasitic damage visible.

Barn Swallow | Feather Identifier