Tundra Swan (formerly Whistling Swan) or Trumpeter Swan

This is a massive flight feather from one of North America's largest birds. Adult swans are iconic for their pure white plumage, while juveniles are mottled grey-brown. They are powerful flyers with long necks and heavy bodies, known for their haunting, trumpet-like or whistling calls during migration.

Pure white base common to adult swans, but heavily marked with dark grey-brown 'soiling' or vermiculation. This suggests a sub-adult/juvenile in transition or environmental staining common in wetland habitats.

Tightly interlocked pennaceous barbs throughout most of the vane for flight rigidity; base of the feather features plumulaceous (downy) barbs for insulation.

Stiff and waxy to the touch; the surface is designed to be highly water-repellent (oily) due to preen gland oils. The trailing edge is smoother than the leading edge.

Large size, extreme vane asymmetry, white base with juvenile/environmental grey mottling, and a very thick, sturdy central rachis.

Arctic tundra during breeding season; large lakes, bays, estuaries, and agricultural flooded fields during winter and migration.

Breeds in the Arctic and sub-Arctic of North America; migrates across the continent to winter along the Atlantic and Pacific coasts and the southern US.

Herbivorous consumers that significantly impact aquatic vegetation; they serve as indicators of wetland health and climate change impacts in the Arctic.

Trumpeter Swan (larger rachis, often indistinguishable without measurements), American White Pelican (similar size but usually has black tips), Snow Goose (much smaller).

Tundra Swans can fly at altitudes of over 20,000 feet during migration and have been known to stay in family units (parents and cygnets) throughout their first winter.

Fair to Good. The feather shows significant edge wear and 'zipper' separation of the barbs (fraying). Surface staining suggests it may have been on the ground in a wetland for some time.