Feather Identifier app iconFeather Identifier
Barn Swallow
Tail feather (Rectrix), specifically an outer rectrix (R5 or R6)

Barn Swallow

Kingdom: Animalia; Phylum: Chordata; Class: Aves; Order: Passeriformes; Family: Hirundinidae; Genus: Hirundo; Species: Hirundo rustica

Family: Hirundinidae (Swallows and Martins)

Shape
Highly asymmetrical and elongated (attenuated) with a distinctively pointed tip and a narrowed trailing vane, characteristic of the 'swallow-tail' fork
Size
Estimated 7-10 cm in length. The extreme elongation suggests an adult male, as tail streamers in Barn Swallows vary by sex and age
Rarity
Very Common; one of the most widespread and familiar birds in the world
Learn more about Barn Swallow in the encyclopedia →

Found a feather like this?

Identify any feather from a photo, free.

Identify a feather

Description

This feather comes from one of the most agile aerial insectivores. The Barn Swallow is a small bird with a deeply forked tail, rufous throat, and blue-black upperparts. This specific feather contributes to the signature 'streamer' look

Colour & Pattern

Dorsal surface is a deep iridescent steel-blue to blackish-brown. Distally, the inner vane features a prominent, oval-shaped white spot (subterminal window). The ventral side is duller gray-black

Barb Structure

Tightly interlocked pennaceous barbs for aerodynamic integrity during high-speed flight; plumulaceous (downy) barbs present only at the very base near the calamus

Texture & Surface

Smooth, stiff, and slightly glossy on the upper surface due to structural coloration; the vane feels firm and crisp to the touch to withstand flight pressure

Key Features

Extreme elongation, stark contrast between the blackish-blue vane and a crisp white subterminal spot, and significant asymmetry

Habitat

Open country, farmlands, meadows, and near water bodies. Often found nesting on man-made structures like barns, bridges, and eaves

Geographic Range

Globally distributed; breeds across North America, Europe, and Asia. Most populations are long-distance migrants, wintering in South America, Africa, and Australia

Ecological Role

Vital insect predator, consuming thousands of flies, beetles, and wasps daily. They serve as excellent indicators of local insect abundance and habitat health

Similar Species

Tree Swallow (lacks white tail spots), Cliff Swallow (shorter, squared tail), and Purple Martin (larger, no white tail windows)

Interesting Facts

The length of these tail feathers is a signal of fitness; females typically prefer males with longer, more symmetrical tail streamers as they indicate better health and parasite resistance

Condition Notes

Fair to Good. The feather shows some mechanical wear and separation of the barbs ('zipped' parts are coming undone), likely a post-breeding season molt specimen

Barn Swallow | Feather Identifier