hackle
hackle is a fashion accessory or plume.
Overview
Materials recorded for it include feather. Catalogue entries for jewellery state metal, stone weights, hallmarks and any accompanying report. VALÉORINE records this subject so that lots referring to it can be described consistently.
In detail
clipped feather plume attached to a military headdress
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Hackle”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q1755375: hackle
Consult the source