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Red-shouldered Hawk
Secondary flight feather (Remiges)

Red-shouldered Hawk

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Accipitriformes, Family: Accipitridae, Genus: Buteo, Species: Buteo lineatus

Family: Accipitridae (Hawks, Eagles, and Kites)

Shape
Broad, slightly asymmetrical with a rounded tip. The vane is relatively wide, typical of woodland buteos that require high maneuverability.
Size
Estimated 6 to 8 inches in length. This is consistent with the secondary feathers of an adult Red-shouldered Hawk, which are shorter and broader than the primaries.
Rarity
Common; populations are stable and frequently encountered in suitable wooded habitats.
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Description

This feather belongs to the Red-shouldered Hawk, a medium-sized raptor known for its striking rufous (reddish) shoulder patches and banded tail. They are vocal hunters, often heard shouting a distinctive 'kee-aah' call. In flight, they show a translucent 'window' near the wingtips.

Colour & Pattern

Distinctive high-contrast 'checkerboard' pattern. Features bold, dark brown to blackish-brown bands alternating with crisp white or pale cream bands. The dorsal surface is vibrant, while the ventral side is more muted.

Barb Structure

Mostly pennaceous and tightly interlocked for flight efficiency, transitioning to soft, plumulaceous (downy) barbs near the superior umbilicus (base) for insulation.

Texture & Surface

The surface is smooth and somewhat stiff to the touch, with a slight matte-to-semi-gloss finish. It lacks the velvety 'silent' fringe found in owls, indicating a hawk species.

Key Features

Bold, equal-width dark and white banding; broad, rounded profile; absence of the fine 'serrations' seen in owls; stiff rachis.

Habitat

Deciduous or mixed woodlands, often near water sources such as rivers, swamps, or wooded wetlands. They prefer forested areas with open understories for hunting.

Geographic Range

Common across the Eastern United States, extending into Southern Canada, and a disjunct population resides along the coast of California and Baja California.

Ecological Role

Generalist predator; they control populations of small mammals, reptiles (snakes), and amphibians (frogs). They are important indicators of healthy riparian woodland ecosystems.

Similar Species

Broad-winged Hawk (shorter, usually fewer/wider bands) and Red-tailed Hawk (lack the crisp white-on-dark banding on secondaries). Immature Cooper's Hawks have narrower, brown-on-tan banding.

Interesting Facts

Red-shouldered Hawks are highly territorial; they often return to the same nesting territory year after year, sometimes using the same nest for decades with annual repairs.

Condition Notes

Fair to Good. There is some separation of the barbs (zipper effect) and slight fraying at the tip, suggesting it was a naturally molted feather that spent some time on the ground.