Cat, why do you do this? Come running to get into my room and then come to a dead stop right after getting in to stretch, blocking my way in?

Because cats.

She can 'because cats' somewhere else. :-|

(She's currently sitting on my desk where she has a good view of the bird and is making it hard to use my mouse.)

XD

Okay, she's been booted. She was acting like she was about ready to jump up onto the dresser with the bird.

Hahaha, oops.