Double-crested Cormorant

This specimen represents a detached partial wing section from a waterbird, displaying several dark flight feathers and coverts lying on sandy, debris-strewn ground. Cormorants are large, dark-plumaged waterbirds known for their characteristic posture of holding their wings out to dry after diving for fish

Dark greyish-black coloration with subtle glossy sheen along the vanes, typical of juvenile or non-breeding adult cormorant plumage

Tightly interlocked pennaceous structure providing aerodynamic strength, with well-developed barbicels forming a cohesive, semi-waterproof vane

Sturdy, dark-toned central rachis with high-density barbs angled tightly toward the feather tip for maximum aerodynamic efficiency

Stiff, smooth, and semi-matte texture, characteristic of waterbird flight feathers which lack complete waterproofing oils and tend to become waterlogged during extended dives

Wing section (remiges and upper coverts), showing the natural imbrication and layering of the folded avian wing

Uniform dark grey-black coloration, rigid pennaceous wing feathers, and the structural arrangement of a partial avian wing rather than a single isolated feather

Inures to coastal marine environments, estuaries, large lakes, rivers, and reservoirs where fish are abundant and suitable perches or shorelines are available

Widespread across North America, inhabiting both coastal and inland waters from Alaska and Canada down through the United States and into Mexico

Acts as a prominent piscivorous apex predator and indicator species in aquatic food webs, influencing fish population dynamics in both freshwater and marine ecosystems

Other cormorant species such as the Neotropic Cormorant or Brandt's Cormorant, as well as certain dark gulls or waterfowl, though the specific wing geometry and dark plumage strongly point toward a Double-crested Cormorant

Cormorants lack the fully developed preen gland oils of ducks and geese, which causes their feathers to become waterlogged during dives, requiring them to spend considerable time drying their wings in the sun

In parts of Asia, domesticated cormorants are used in traditional commercial fishing by tying a snare around the base of the bird's throat to prevent them from swallowing larger captured fish

Look near water bodies, shorelines, or nesting colonies where scavengers or predators may have left behind wings or remains of waterbirds

Fair condition; shows some exposure to weathering, minor grit accumulation from the ground, and slight fraying along the leading edges of the wing section