Tell me what you know about summoning within the Naruto-verse. What it requires etc.
And what do you know of Crows in General.
Summonings are contracts between animals and humans where after performing seals and using chakra or sacrificing blood they can be called to the field.
Usually the contract signer would write their name in blood. Summonings can range from a Tiny frog, to a giant snake, to 10000 sharks.
Theres been a few contracts shown in the show, as well as also seeming like summonings are also linked to sage mode. Not sure why that is, I guess bonds woth naure or something.
Crows are birds, also known as Corvus, have several subspecies, grouped together called murder of crows and generally seen as pretty smart. Sometimes seen as an omen of death, can carry messages, and can scavenge for food.