Emu

The Emu is the second-largest living bird by height. It is a flightless ratite with a shaggy coat of grey-brown feathers that help regulate its temperature in the harsh Australian sun. Unlike most birds, its feathers have two shafts of equal length arising from a single follicle.

Dull brownish-grey to charcoal with a lighter, whitish base. The tips often darken where melanin is more concentrated to resist wear.

Plumulaceous (downy) and loose; lack of interlocking hooklets (barbicels) gives it a hair-like, non-veined appearance.

Thin, flexible, and dark-pigmented central shaft. Barbs are sparsely distributed and long, creating a shaggy, disorganized look.

Soft, silky, and hair-like. It lacks the stiffness of flight feathers because Emus are flightless and do not require aerodynamic rigidity.

Body feather, likely originating from the back or flank area where the plumage is longest and most dense.

Double-shafted (bifid) structure and hair-like, non-interlocking barbs.

Found across most of the Australian continent, ranging from sclerophyll forests to semi-arid savannas and grasslands.

Endemic to mainland Australia. Found year-round with nomadic movement patterns following rainfall and food availability.

Large-scale seed disperser across the Australian landscape; high-level herbivore. Conservation status is Least Concern (IUCN).

Ostrich feathers (much larger, more voluminous) or Cassowary feathers (shorter, courser, and often more quill-like).

The Emu is the only bird with a specialized tracheal pouch that allows it to make deep booming sounds that can be heard up to 2 kilometers away.

Highly significant in Australian Aboriginal culture for food, oil, and ceremonies. Historically, feathers were used in 'Kurdaitcha' shoes and are currently used in fashion and craft.

Look for the unique 'double-feather' appearance where two identical feathers seem to grow from one point. In zoos, they are common near dust-bathing areas.

Fair to Good. The feather shows natural curling and some separation of the barbs at the tip, typical of naturally shed (molted) specimens.

Hertfordshire Zoo