"montag you shin that pole like a bird up a tree."; said by beatty
"the books leapt and danced like roasted birds, the wings ablaze with red and yellow feathers."
"they fell like slaughtered birds and the woman stood below like a small girl among the bodies."_
when the word bird is used to compare it serves as a purpose as to make the thing that is being compared get a sense of grace or deligence, like something that should be protected. like when he uses it to describe books as somthing in danger and has a grace or vibrance to them, like birds.
Ghost
Quotes
"in and on and about everything, he was a luminous cloud, a ghost that made breathing once more impossible."
"he saw faber stop up his own breath for fear of drawing that ghost into his own body, perhaps, being contaminated with the phantom exhaltions and odors of a running man."
"he felt as if he had left the great seance and all the murmuring ghosts."
Ghost is uasually used to sybolies something ominious. like when montag is with faber ghosts sybolis that montags escance or smell was like a ghost that would get them caught. its used to give off a sense of ominious by help setting in the fear of the charecters as they try to flee giving little sighs, but like a ghost they still linger. also when used to describe the people it helps biuld the feeling that they are like mindless spirits, mad and giving a sense of evil.