syrinx
syrinx is a organ or vocal apparatus.
Also recorded as syringes; bird syrinx.
Overview
Catalogue entries state maker, model, completeness of accessories and condition. VALÉORINE records this subject so that lots referring to it can be described consistently.
In detail
vocal organ of birds at the base of a bird's trachea
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
“Syrinx (bird anatomy)”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q1361748: syrinx
Consult the source