"birdcam station" is a small private program run by the owner of the YouTube channel Berlin Crow Nest Cam (@BerlinCrowNestCam). It looks after the channel's bird camera and its live stream.
What it does with YouTube
It reads the live chat of the channel's own live stream.
It forwards the chat messages to the owner's private Telegram chat.
When the owner answers a message in Telegram, it posts that answer to the live chat as the channel.
Who it is for
Only the channel owner. It is not a public service and has no sign-in for other people.