well im like 6 techs away from completing ninjutsu but yes ive learned from my snake training.
crows or corvus or ravens or rooks etc are a highly intellegant species of birds which are covered in black or grey feathers.they are believed to have originated from asia and then migrated to other contenents spreading all across the world. they will eat almost anything and usually fly in flocks or in a murder of anywhere from hundred to thousands.
Now in naruto crows dont get alot of screen time. They were a summoning contract used by itachi uchiha. they have no known summoning boss or where they reside unsummoned. Itachi mainly used his crows to form crows or to disguise his genjutsu or taijutsu. now the summon itself has few abilitys and summons but if you ask me theyre all badass. like cmon a clone... MADE OF ****ING CROWS how more badass can you get? and apparently these crows have special propetrys able to maintain and evolve and devolve a sharingan and apparently live inside people :?
Itachi and Shisui were users of the Crow Contract. Not just Itachi
@Bold: No, in both instances those were a form of sealing technique. For the Crow who possessed Kotoamatsukami in its right eye, Itachi sealed it away there through a form of Sharingan Transcription technique, same like the one he used to seal Amaterasu into Sasuke's eye. And when he placed the crow "inside" of Naruto it was simple sealed inside of him, with its specific trigger being Sasuke. The Crow contract alone can't do these, it was only made possible through Itachi's power.
Okay so moving on. Yea, they didn't get much screen time but their influence was great enough to make it onto the NB Canon Contracts list so here we are. Before I move on, please specify where you want this Crow Summoning tattoo, if any at all. Then, I'm gonna need you to venture into that dank looking cave over there and bring back to me the sacred Contract Scroll.
*points to a ghastly looking opening in the ground*