Feather

Feathers are structures distinctive of certain archosaurs such as dinosaurs, particularly their avian descendants. Feathers provide insulation, waterproofing, flight aid, and can also be help in camouflage or communication. Throughout human history, feathers have been used for aesthetic, practical, and ritual purposes. 
Among the Assassin Brotherhood, feathers were of particularly high importance and, at various points in their history, were used by the Brotherhood's members during their assassinations to mark the death of a target.
==Structure==
Feathers are typically composed of a center shaft with interlocked barbs branching out from the shaft to create a stiff vane. The barbs of downy feathers are not interlocked causing them to be much softer.
==Human usage==
===Classical Greece===
The Mysteries of Hedone, a cult active during the Peloponnesian War, used feather-collecting as part of their initiation ritual,Assassin's Creed: Odyssey – The Lost Tales of Greece – The Hedonistic Method though the historian Herodotos believed it a futile endeavor that no one should emulate.
===Ptolemaic Egypt===
In Egypt, feathers, particularly those of eagles, were used in various rituals. The inhabitants of Siwa believed that the hearts of the dead would be weighed against the feather of Ma'at to determine the soul's fate in the afterlife. If the heart was equal to or lighter than the feather, the soul could pass on to the Field of Reeds; otherwise, it would be devoured by Ammit.Assassin's Creed: Origins
During his hunt of the Order of the Ancients, the Medjay Bayek of Siwa used feathers to send his targets to the Duat for Osiris to judge in accordance with Egyptian mythology. After Bayek founded the Hidden Ones alongside his wife Aya, this practice was quickly adopted by the members of their organization.Assassin's Creed: Origins – The Hidden Ones Although the practice's original purpose was lost over the centuries, it nonetheless remained an integral part of the Hidden Ones' identity.Assassin's Creed: Mirage – A New Beginning
===Abbasid Caliphate===
In 862, Fuladh Al Haami, a member of the Alamut Hidden Ones, explained the origins of their practice of dipping feathers in their targets' blood to a new initiate, Basim Ibn Ishaq. Fuladh claimed that, although the tradition did not hold the same meaning as when the brotherhood was first founded, it nonetheless served as an important reminder that the Hidden Ones were only messengers of justice, and not the final judges.
During his hunt of the Order of the Ancients in Baghdad, Basim was given a heron's feather ahead of each major assassination, typically by a Rafiq, which he would then dip in his target's blood and return to the Hidden One bureau as proof of the target's death.Assassin's Creed: Mirage
===Third Crusade===
For the Levantine Assassins during the High Middle Ages, similarly to the Alamut Hidden Ones, feathers were used to either grant an Assassin permission to kill a target or prove that the assignment had been completed,Assassin's Creed but also could be used to warn potential targets about how vulnerable they were, as was the case when Umar Ibn-La'Ahad infiltrated Saladin's camp and laid a feather on the Sultan's pillow.Assassin's Creed: The Secret Crusade – Chapter 3Assassin's Creed: Initiates – Database: Altaïr Ibn-La'Ahad: "Saracen Siege of Masyaf" 
After investigations on the target had been completed, Assassin bureau leaders would give the chosen Assassin a feather, allowing them to proceed with the actual mission. Upon killing his target, the Assassin would stain the feather with the blood of the slain, and present it to the Bureau leader. Among Assassins, the phrase "having a feather on one's head" meant a mark of death. For example, an informer in Damascus once commented that "a feather laid on top of Abu'l Nuqoud's head", implying that the Merchant King was marked for assassination.Assassin's Creed – Stealth Assassination (Abu'l Nuqoud)
===Renaissance===
As he was sickly and often confined to bed, Petruccio Auditore once asked his brother Ezio to collect feathers for him. Though Ezio asked him what they were for, he only said it was a secret to be revealed in time,Assassin's Creed II – Petruccio's Secret but obliquely suggested that they were meant as a present for their mother Maria.Assassin's Creed: Renaissance 
Unfortunately, Petruccio never had a chance to tell Ezio what the secret was, as he was murdered alongside their elder brother Federico and father Giovanni the immediate next day. Maria was struck particularly hard by his loss and she remained silent for years,Assassin's Creed II – Last Man Standing only breaking it to quietly pray over Petruccio's feather box that she kept in her room in Monteriggioni's Villa Auditore, in mourning for her lost child.Assassin's Creed II – Practice Makes Perfect
In an effort to resolve this, Ezio sought to collect feathers, both in memory of his brother and to coax his mother into speaking again. As he traveled across Italy, he gathered and placed any feathers he found into a box in his mother's room.Assassin's Creed II
After Ezio had collected 50 feathers, his uncle Mario spoke with him about what he was doing, suggesting that he should give up in what he believed to be a wasted effort. After collecting 100 feathers, however, Ezio's efforts were rewarded. Maria spoke again for the first time in years, thanking Ezio for not giving up on her and presenting him with a cape that bore the House of Auditore crest.Assassin's Creed II – Floating conversations: "A Mother's Grief"
In his later years, even after the siege of Monteriggioni, Ezio would continue to collect feathers in Rome, particularly those found on landmarks throughout the city. He placed these feathers in a chest at the Tiber Island headquarters, which resembled the feather box that had once been kept in Maria's room.Assassin's Creed: Brotherhood
===American Revolutionary War===
In 1769, Ratonhnhaké:ton and Kanen'tó:kon gathered 3 eagle feathers from nests near Kanatahséton at the request of their village's Clan Mother.Assassin's Creed III – Feathers and Trees During the course of the American Revolutionary War, Ratonhnhaké:ton could also collect other feathers across the Frontier in memory of his village.Assassin's Creed III
Over a decade later, during the funeral of his Mentor Achilles Davenport in 1781, Ratonhnhaké:ton laid a feather on his coffin.Assassin's Creed III – Legacy
===Modern times===
Before the Great Purge, an Assassin safehouse disguised as a dry-cleaners used photographs of feathers, coupled with the codeword "Rafiq", as proof of identity. However, the Templars, with the help of Daniel Cross, used this information to identify the safehouse and launch an assault.Assassin's Creed: The Fall (TPB)
==Trivia==
*Proximity to a feather was signaled by a 'shimmering' sound effect identical to the ones heard near treasure chests, glyphs, and Codex pages, as well as the decipher fragments in Assassin's Creed: Revelations downloadable expansion The Lost Archive.
;Assassin's Creed II
*Collecting all 100 feathers unlocked the achievement "In Memory of Petruccio".
*If Ezio placed all 100 feathers at once in Maria's feather chest, the cutscene with Maria occurred before the one with Mario.
*If one were to begin collecting feathers in Florence before arriving at Monterigionni, the Animus would still provide the message stating that feathers could be returned to Maria's room there.
;Assassin's Creed: Brotherhood
*Collecting all 10 feathers unlocked the achievement "In Memoriam".
*After Sequence 4, a map detailing the locations of all the remaining feathers could be bought from any art merchant.
*In 2012, Desmond Miles could explore Monteriggioni and find Maria's feather chest, which counted as one of the Monteriggioni artifacts.
;Assassin's Creed III
*All feathers were found in the Frontier, and a map detailing their locations could also be bought from general stores.
*Collecting all feathers unlocked the outfit Ratonhnhaké:ton wore before becoming an Assassin.
;Assassin's Creed: Syndicate
*Jacob and Evie Frye used handkerchiefs to mark successful assassinations rather than using feathers.
==Gallery==
ACISaracenSiege.png|A feather left in Saladin's tent
ACTF Feather.jpg|A Templar holding a picture of a feather
==References==
pt-br:Pena
zh:羽毛
Category:Assassin Brotherhood
Category:Ezio Auditore da Firenze's collections
Category:Ratonhnhaké:ton's collections
Category:Mysteries of Hedone