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

The feather belongs to the Magpie-lark, a bold black-and-white bird roughly the size of a pigeon. They are famous for their complex 'antiphonal' duets where a pair sings in perfectly timed alternating notes. Despite the name 'Magpie-lark,' they are neither magpies nor larks, but large monarch flycatchers.

Strikingly bicolor. The inner vane is largely white, while the outer vane and the distal tip are a deep, charcoal black. The rachis transitions from a light cream at the base to dark brown or black in the pigmented portion.

Tightly interlocked and pennaceous throughout most of the vane to provide aerodynamic lift. The base of the feather shows loose, plumulaceous (downy) barbs for insulation.

Smooth and somewhat glossy on the black pigmented areas, which are reinforced by melanin. The white section is softer to the touch. The overall surface is matte and slightly oily for water resistance.

High contrast black-and-white division down the rachis; rounded tip; rigid primary structure; lack of iridescent sheen common in true magpies.

Extremely versatile; found in urban parks, gardens, wetlands, grasslands, and agricultural lands, typically near water or damp mud for nest building.

Widespread and resident throughout mainland Australia; also found in southern New Guinea and Lord Howe Island. They are generally sedentary but may move in response to drought.

Insectivorous predator; they play a significant role in controlling lawn and garden pests like grasshoppers and snails. They are highly territorial and aggressive toward perceived intruders.

Australian Magpie feathers (usually larger, different pattern), Pied Currawong (larger with white bases rather than longitudinal splits), and Australian Magpie-lark (G. cyanoleuca) is unique in this specific split-vane coloration.

Magpie-larks are one of only two Australian birds that build nests entirely out of mud. They also exhibit 'duetting,' where pairs clap their wings and sing to defend their territory in perfect synchronization.

Good condition. There is minimal wear at the tip, suggesting a relatively fresh molt. The calamus is clean, indicating it was likely naturally molted rather than plucked.