Magpie-lark (also known as Peewee, Peewit, or Mudlark)

The feather is a diagnostic outer primary remex from a Magpie-lark (Grallina cyanoleuca), a medium-sized iconic Australian passerine. The species features bold black-and-white plumage with clear sexual dimorphism in face markings. Known for their distinct 'pee-wee' antiphonal duets and mud-bowl nests, they are one of Australia's most recognized birds.

Striking bicolored pattern: bright clean white on the main body of the vane with a sharp, bold black border along the leading outer edge and dark blackish tipping/base

Densely packed pennaceous barb structure, tightly interlocked with microscopic barbicels providing aerodynamic surface integrity, turning slightly plumulaceous only near the very base of the calamus

Smooth, firm, and crisp surface texture typical of passerine primary feathers designed for quick, flapping flight

Extreme asymmetry between leading and trailing vanes, clean contrast between bright white vane body and sharp black outer border and tip, rigid lightweight rachis

Highly adaptable; common in open areas near water, urban parks, suburban gardens, farmlands, and open woodlands

Widespread and native across almost all of mainland Australia, as well as southern New Guinea

Insectivorous predator helping control ground invertebrates and urban pests; acts as a host to brood parasites such as the Channel-billed Cuckoo.

Australian Magpie (Gymnorhina tibicen - much larger, heavier primary feathers), Pied Currawong (Strepera graculina - darker feathering, different white patch placement), Willie Wagtail (Rhipidura leucophrys - much smaller)

Despite the name 'Mudlark', it is neither a true lark nor a magpie, but belongs to the monarch flycatcher family. Mated pairs perform tightly coordinated vocal duets to defend territories.

Good condition; minor splitting/separation along the trailing edge barbs, likely a naturally molted feather dropped during post-breeding molt