Wandering on The Raven

I’ve always like Poe and I have read the poem before, to me the obvious meaning of the bird was death and it was most likely related to a lost love of the protagonist name Lenore which lead me to think she was dead and he was mourning her. Now that I’ve come to calmly analyze it I realized that even if it is decided that raven symbolizes death there could still be many possibilities gathered around that fact in terms of plot.
I. The bird could be death “himself” (herself?) coming to take the narrator with him, and therefore kill him
II. The protagonist could be facing the threat/fear of death and it bother him
III. Lenore is dead and has come to visit him
IV. The bird has come to tell him Lenore is dead
V. The author’s conscience is nudging him since he has committed murder, maybe even killed Lenore herself
I could go on forever… but I wont.
It’s hard to pin a single plot to the poem since it is rather vague but I can say that I truly believe the meaning of the bird is death and nothing more.