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2. Down feather - Wikipedia

   en.wikipedia.org/wiki/Down_feather

   In addition, products labeled as "Goose Down" must contain at least 90% goose down, 10% goose feathers. [27] Down insulation is rated by fill power, which is the number of cubic inches displaced by a given ounce of down (in 3 /oz). To measure fill power, an ounce of down is placed into a graduated cylinder, and a small weight is dropped in on ...

3. Australian Aboriginal artefacts - Wikipedia

   en.wikipedia.org/wiki/Australian_Aboriginal...

   A pendant made from goose down, shells, a duck beak and the upper beak of a black swan was discovered from the Murray River in South Australia. Talons of eagles were incorporated into ornaments among the Arrernte of Central Australia. Wombat (Vombatus ursinus) claw necklaces are known from Victoria. [40]

4. Fill power - Wikipedia

   en.wikipedia.org/wiki/Fill_power

   Common fill power values range from about 300 cubic inches per ounce (170 cm 3 /g) for feathers to around 900 in 3 /oz (520 cm 3 /g) for the highest quality goose down. The rare and relatively expensive down of certain wild waterfowl species such as the Muscovy duck or Common eider can have higher fill powers than goose down. Higher fill powers ...

5. What's the Difference Between Duck and Goose Down? - AOL

   www.aol.com/news/whats-difference-between-duck...

   Find out which pillow, blanket, or furniture filling is right for you.

6. Down jacket - Wikipedia

   en.wikipedia.org/wiki/Down_jacket

   The down jacket, known more commonly in the fashion industry as a puffer jacket or simply puffer, is a quilted coat which is insulated with either duck or goose feathers. Air pockets created by the bulk of the feathers allow for the retention of warm air.

7. Feather - Wikipedia

   en.wikipedia.org/wiki/Feather

   Down feathers are fluffy because they lack barbicels, so the barbules float free of each other, allowing the down to trap air and provide excellent thermal insulation. At the base of the feather, the rachis expands to form the hollow tubular calamus (or quill) which inserts into a follicle in the skin. The basal part of the calamus is without ...