The simurgh is a fabulous bird of Persian legend, a repository of wisdom. It is distinguished by its long tail feathers, and for that reason may also be blazoned a “Persian peacock”. This form of the simurgh dates from the 14th Century, in the Shahnama (Book of Kings); it seems to have derived from the senmurv of the 7th Century, and many modern sources equate the two. The legends give the simurgh some of the qualities of the roc (enormous size) and the phoenix (immortality, wisdom); it may have been the precursor of the Russian firebird.
As an heraldic charge, the simurgh is unique to Society armory; its use carries a step from period practice. It doesn’t seem to have a default posture; the illustration shows a simurgh close.
Meara al-Isfahani bears: Or, a simurgh displayed gules within a bordure engrailed sable.
Helena de Argentoune bears: Per bend sable and gules, a simurgh volant bendwise Or.
Tavia of Persia bears: Azure, a simurgh close Or.