Birdman to Tyga -- I'm Like Kylie Jenner ... You Can't Screw Me and Get Away with It

Tyga needs to pull his head out of his ass and learn nobody's buying the cow when you give 'em the milk for free -- that's Birdman's reaction to Tyga's new album ... according to Cash Money sources.

We're told Birdman's fuming because Tyga encouraged fans to listen to songs from "The Gold Album: 18th Dynasty" on free music streaming services, like Spotify -- a move Birdman did NOT approve.

Our sources say the Cash Money honcho thinks Tyga sunk his album -- which sold just 2,200 copies in its first week -- because everyone could listen to the songs for free. By comparison, Tyga's last record sold nearly half a million copies.

We're told Birdman thinks Tyga purposely pulled the "childish" stunt ... to get out of his deal, and go sign with Lil Wayne -- but Birdman's not counting this album. That means Tyga would still owe him another one.