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Yellow-tailed Black Cockatoo
Tail feather (retrix)

Yellow-tailed Black Cockatoo

Kingdom: Animalia, Phylum: Chordata, Class: Aves, Order: Psittaciformes, Family: Cacatuidae, Genus: Zanda, Species: Z. funerea

AI-generated identification · may be incorrect

Family: Cacatuidae (Cockatoos)

Shape
Symmetrical vane with a slightly rounded to squared tip
Size
Approximately 8 to 10 inches long, consistent with a medium-to-large tail feather from a large cockatoo species.
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Description

The Yellow-tailed Black Cockatoo is a large, majestic cockatoo with brownish-black plumage, yellow cheek patches, and bright yellow panels in its tail feathers. Known for its mournful, wailing calls and powerful bill used for extracting wood-boring beetle larvae, it is an iconic bird of the Australian eucalyptus forests.

Colour & Pattern

Vibrant, bright yellow central barbs and vanes contrasting sharply with a solid black or dark charcoal terminal band at the tip, featuring a prominent, bright yellow rachis.

Barb Structure

Pennaceous vane structure tightly interlocked along the distal portion, becoming slightly plumulaceous at the extreme base near the calamus.

Rachis & Barb Pattern

Strong, thick, vibrant yellow central rachis with high barb density and uniform angle of barbs extending outwards, displaying a distinct color transition to black near the tip.

Texture & Surface

Smooth, firm, and matte texture with strong rigidity along the rachis and tightly zipped barbs forming a solid, durable vane.

Feather Placement

Tail (central or lateral retrix), identifiable by the broad web and striking yellow-and-black coloration pattern typical of the rectrices of this species.

Key Features

Brilliant yellow rachis and vane contrasting against a stark black terminal tip, distinctive of the tail feathers of the Yellow-tailed Black Cockatoo.

Habitat

Eucalypt forests, pine plantations, woodlots, and coastal scrublands in southeastern Australia.

Geographic Range

Endemic to southeastern Australia, ranging from southern Queensland through New South Wales and Victoria to Tasmania and South Australia.

Ecological Role

Acts as a primary biological control agent for wood-boring beetle larvae in eucalypt forests and aids in seed dispersal.

Similar Species

Other black cockatoo species such as the Red-tailed Black Cockatoo (Calyptorhynchus banksii) and Glossy Black Cockatoo (Calyptorhynchus lathami), which feature red or brownish-red tail panels instead of bright yellow.

Interesting Facts

These cockatoos play a vital ecological role by stripping bark from trees to locate wood-boring grubs, often leaving distinctive scars on eucalypt trunks. They can live up to 50 years or more in the wild.

Cultural Significance

Highly significant to Australian Aboriginal cultures, featuring in traditional stories and art. Feathers are sometimes utilized in cultural artifacts and educational displays under strict indigenous protocols.

Field Identification Tips

Look for molted tail feathers under large eucalypt trees or near feeding sites where the birds have been extracting larvae from wood.

Condition Notes

Good condition with intact barbs and a clean, unfaded yellow shaft, showing minimal wear at the tip.