Ooh so that's what STEP you means

Thank-you.
Kanariya
Wikipedia tells us:
Quote:
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It is yellow-green, with brownish streaking on its back.
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So it is possibly not a canary, but the lyrics tell us:
The city is alive
The people are restless
The birds that
fly into the night
are already asleep.
The bird associated with night is a crow? Hence why it is black.

I'm not sure.... but that's my expanation. We should just ask Ayu.