Answer by  
                                                                                          robdressler21hotmailcom (19)
                                                            
                          
                          
                                                          A lovebird can regenerate beak“s portion but not complete, I used to breed Agaporni (lovebirds) and they fight a lot and lose the beak, several number dies but those who survive, develope a little beak, about 1/2 inch, enough to eat seeds and drink water. of course is uggly but life marching on anyways.