you can't posses birds cause... um. cause (checks notes) uhhh...
Billie Lurk: I’m gonna kill The Outsider.
The Outsider, probably: i’M GonNA KilL thE otUSIDER!!
I thoroughly believe that Thomas accidentally called Daud dad at some point, then the rest of the whalers immediately started calling him dad too to annoy him. (He'd never let them know that he actually loves it, they are basically his kids after all)