(Some scholars say that the Taira army, who knew that the Takeda army of the Minamoto side was coming to attack them that night because they had heard the birds, was trying to pullback temporarily when an evacuation order came out of blue, causing confusion among soldiers and making them run.)
（ただし、羽音によって源氏方の武田氏の夜襲を察知して一時撤退を計ろうとしたところ、不意の命令に混乱して壊走したという説もある。）