The Voice of the Caller
Interpreters have mentioned that if one hears the voice of a caller in a dream, whether it conveys a command, a prohibition, good news, or a warning, its interpretation is exactly as heard. It was also said that the speech of the dead and the speech of any bird to the dreamer are good tidings of attaining great kingship, knowledge, and understanding.
Per Ibn Sirin's Muntakhab al-Kalam fi Tafsir al-Ahlam
Note: These are traditional scholarly interpretations (ijtihad) drawn from a specific classical source — not a binding religious ruling, fortune-telling, or a prediction of the future.