Osprey (also known as Fish Hawk, River Hawk, or Sea Hawk)

This is a secondary wing feather from an Osprey, a large, unique raptor with a 5-foot wingspan. The bird is white below with a dark brown back and a characteristic dark stripe through the eye. They are famous for their spectacular plunging dives to catch fish.

Distinctive dark chocolate brown on the distal (top) half, transitioning into a pale white or cream base. There is evidence of dark barring/banding on the inner vane portion, which is a diagnostic trait for Osprey plumage.

Tightly interlocked pennaceous structure throughout most of the vane for flight efficiency; plumulaceous (downy) at the very base (calamus area). The barbs appear stiff and water-resistant.

The rachis (central shaft) is thick and sturdy, ivory to white in color. Barbs are densely packed at a consistent angle to provide a solid aerodynamic surface.

Dense, stiff, and somewhat oily to the touch. Ospreys have specialized preen oil that makes their feathers more water-resistant than most other raptors, given their diving hunting style.

Wing secondary. The relative symmetry of the inner and outer vanes and the broad, paddle-like shape identify it as a secondary feather, used to provide lift during flight.

Broad shape, dark brown tip transitioning to a white base with dark transverse barring on the inner vane, and a thick white rachis.

Found near large bodies of water including lakes, rivers, reservoirs, and coastal estuaries. In Long Prairie, MN, they favor the numerous glacial lakes and river systems.

Cosmopolitan distribution. In Minnesota, they are summer residents that migrate to Central and South America for the winter months.

Apex predator of aquatic ecosystems. They serve as excellent bio-indicators for environmental toxins like mercury and historical DDT levels.

Bald Eagle (immature) feathers are larger and usually lack the neat white-to-brown transition. Red-tailed Hawk feathers have different banding and a more reddish/buff tone.

Ospreys are the only raptors that dive completely underwater to catch fish. Their outer toes are reversible, allowing them to grasp fish with two toes forward and two toes back for a better grip.

Historically admired by maritime cultures as symbols of fishing prowess. They are often used as flagship species for wetland conservation and water quality monitoring.

Look near tall trees or man-made platforms containing large stick nests. July and August are peak times to find molted feathers as the breeding season ends.

Fair to Good. The feather shows significant 'zipper' separation of the barbs (venting), likely due to contact with water or handling. No significant parasitic damage is visible.

Long prairie mn,near a osprey’s nest