Thank you so much! I think she/he was just a little itchy that day, I gave her/him a spray bath and the twitching has since stopped. I have another perch in there and the perch gets wider at the other end. And she has a band on her left foot so that's the lump you saw. The name we came up with was Romeo, but we changed it to Romea when we thought she was a she. I need to take another video and post it to ask everyone what they think. Sometimes the cere looks blue but then when I see other male budgies it makes me think she's definitely a female because it's never as blue as the other birds I've seen. Thank you all for answering!