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Northern Mockingbird
Tail feather (rectrix), specifically an outer tail feather

Northern Mockingbird

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Passeriformes, Family: Mimidae, Genus: Mimus, Species: Mimus polyglottos

AI-generated identification · may be incorrect

Family: Mimidae (Mockingbirds, Thrashers, and Allies)

Shape
Asymmetrical vane with a gently tapered, rounded tip, typical of passerine outer tail feathers
Size
Approximately 4 to 5 inches long, consistent with the outer rectrices of a medium-sized songbird
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Description

The Northern Mockingbird is a medium-sized grey songbird renowned for its extraordinary vocal mimicry, capable of learning hundreds of songs from other birds, mechanical sounds, and even amphibians. It features unassuming grey-brown upperparts, paler underparts, and striking white flashes in the wings and outer tail feathers that are dramatically flared during territorial displays.

Colour & Pattern

Predominantly soft grey with a stark, contrasting white patch near the tip and along the outer web, transitioning to dark grey or blackish tones near the extreme tip; the rachis is white at the base and darkens toward the tip

Barb Structure

Pennaceous vane on the upper portion transitioning to slightly plumulaceous near the base; barbs are tightly interlocked with microscopic barbicels, and the condition is intact with minor natural wear

Rachis & Barb Pattern

Slender, white, slightly curved central rachis that transitions to dark grey distally; barbs are fine, densely packed, and angled uniformly along the shaft

Texture & Surface

Smooth, silky, and matte in appearance with a flexible yet resilient structure designed for aerodynamic agility during flight and tail-raising displays

Feather Placement

Tail (outer rectrix, likely R5 or R6), determined by the distinct white patch pattern on the outer web which is characteristic of outer tail feathers used in visual signaling

Key Features

Distinctive combination of soft grey coloration coupled with a prominent white patch near the tip of an outer tail feather, and a slender, flexible passerine rachis

Habitat

Open and semi-open habitats, including forest edges, suburban residential areas, parks, cultivated lands, and desert scrublands

Geographic Range

Resident throughout most of the United States, southern Canada, Mexico, and parts of the Caribbean; northern populations may undertake short-distance southern movements

Ecological Role

Acts as an important seed disperser and insect predator while serving as an aggressive defender of nesting territories against larger predators

Similar Species

Loggerhead Shrike or Brown Thrasher, though shrikes lack the extensive white outer tail pattern and thrashers are much warmer rufous-brown

Interesting Facts

Unmated male mockingbirds sing continuously throughout spring nights, earning the species its scientific name Mimus polyglottos, meaning many-tongued mimic

Cultural Significance

Featured prominently in American literature, music, and folklore, notably as the central moral symbol in Harper Lee's classic novel To Kill a Mockingbird

Field Identification Tips

Look for molted tail feathers under dense shrubs or near suburban yards where mockingbirds frequently forage and engage in territorial chases

Condition Notes

Good condition with minor normal feather wear at the margins, intact barbs, and no visible fault bars or parasitic damage

Northern Mockingbird | Feather Identifier