The cuckoo as a dream symbol stands for fate and destiny. It generally bears a negative significance, forewarning of misfortune and a long period of sorrow and grief to occur in your waking life soon. Hearing a cuckoo sing or simply seeing this bird in your dream announces that the loss or death of a dear friend or family member may take place soon.
The cuckoo is the bird which lays its eggs in other birds' nests and deserts its youngs to go and ramble in nature. Therefore, cuckoo may stand for a person in your life who does not deserve your confidence and trust, as they will not be there for you when you desperately need their help.
The cuckoo may also be a warning that your life has taken a wrong turn. You need to change the direction of your life or the way in which you approach a certain important situation.