Editing Down feather (section)

{{short description|Soft, fine feather, sometimes under larger feathers}}
{{Use dmy dates|date=September 2020}}
[[File:Donsvlokje.jpg|thumb|alt=Fluffy white down feather against black background|Down feathers lack the interlocking barbules of [[pennaceous feather]]s, making them very soft and fluffy.]]
The '''down''' of [[bird]]s is a layer of fine [[feather]]s found under the tougher exterior feathers. Very young birds are clad only in down. '''Powder down''' is a specialized type of down found only in a few groups of birds. Down is a fine [[thermal insulator]] and [[padding]], used in goods such as [[Down jacket|jacket]]s, [[bedding]] ([[duvet]]s and [[featherbed]]s), [[pillow]]s and [[sleeping bag]]s. The discovery of feathers trapped in ancient amber suggests that some species of non-avian dinosaur likely possessed down-like feathers.