Maybe it was just demented and talking to itself

It's bird-post day it seems

did the bird stop awkwardly when it notices the microphone

I doubt he was singing for itself, most probably it wasn’t singing for us.

Or the last bird was just a lil eepy birb out of energy

My favourite bird song fact is that parrots (even small ones like budgies) can associate particular sound sequences with specific members of their flocks, including themselves. They can also introduce themselves to each other with those sequences.

If you happen to own a parrot, it most likely has a name in its own language and has told it to you. And it also gave you a name.