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Northern Mockingbird
Tail feather (retrix), specifically a outer rectrix (R5 or R6)

Northern Mockingbird

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

AI-generated identification · may be incorrect

Family: Mimidae (Mockingbirds, Thrashers, and Allies)

Shape
Asymmetrical vane with a gently rounded tip, elongated outline, characteristic white edging typical of outer tail feathers in this species.
Size
Approximately 3.5 to 4.5 inches long, consistent with an outer tail feather. Tail feathers for this species typically range from 3 to 5 inches.
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Description

The Northern Mockingbird is a medium-sized songbird renowned for its remarkable capacity for vocal imitation. It features a slender body, a long tail often held cocked upward, and grayish upperparts with whitish underparts. Prominent white wing patches and white outer tail feathers flash conspicuously during flight and territorial displays. They are bold, inquisitive birds known for singing day and night during the breeding season.

Colour & Pattern

Dark grayish-brown on the inner web and upper shaft, transitioning to brilliant, clean white on the outer web and tip. Melanin-based pigmentation creates the dark gray tones while structural/pigment absence creates the stark white areas.

Barb Structure

Pennaceous vane with tightly interlocked barbs and barbules along the upper portion, transitioning to slightly looser barbs near the base. No prominent afterfeather.

Rachis & Barb Pattern

Slender, dark gray rachis near the tip transitioning to whitish near the base, slightly curved for aerodynamics and flexibility. Barbs are tightly packed and angled neatly away from the rachis.

Texture & Surface

Smooth, silky, and matte texture with moderate rigidity along the upper vane, becoming slightly softer and flexible toward the base.

Feather Placement

Tail (outer rectrix). Determined by the characteristic stark white patches on the outer web which are diagnostic of the outermost tail feathers used for flashing during territorial displays.

Key Features

Contrasting dark grayish-brown and extensive clean white patches on the outer web of an elongated tail feather.

Habitat

Open and semi-open habitats, including edge habitats, suburban areas, parks, gardens, scrublands, and cultivated lands.

Geographic Range

Permanent resident across much of North America, ranging from southern Canada through the United States, down to Mexico and the Caribbean. Introduced populations also exist in the Bahamas.

Ecological Role

Acts as an important predator of insects and disperser of seeds, while aggressively defending nesting territories against potential predators of all sizes.

Similar Species

Loggerhead Shrike or other mimids like the Brown Thrasher, but distinguished by the extensive pure white patterns unique to the outer rectrices of the Northern Mockingbird.

Interesting Facts

A single male mockingbird can learn over 200 different songs throughout its lifetime, including the calls of other birds, mechanical sounds, and even alarms of frogs or insects.

Cultural Significance

Featured prominently in American literature, southern folklore, and state symbols (the Northern Mockingbird is the state bird of five U.S. states). Historically captured for the cage bird trade in the 19th century due to its brilliant song.

Field Identification Tips

Look near shrubbery, suburban yards, and open perches where mockingbirds frequently forage or chase intruders. Molted tail feathers are often found under preferred singing perches.

Condition Notes

Good condition, with intact barbs along the pennaceous section and minor wear at the extreme base. No visible fault bars or parasitic damage.