キューライス制作の短編アニメーション。 The ceremony performed in the every morning. The breakfast which never ends. This short animation film made by oneself. q-rais.hatenablog.com
My interpretation is that this dude has OCD and he feels like he needs to do the ritual in a certain order and that the bird interrupted the ritual which caused a domino effect within the limbo.
That's what it is like to be suffering from OCD. You're caught in a continuous cycle you don't know you could be free from. If anything happens unexpected, you fall apart.