To be dreaming of the rooster can mean you are being awakened by this early morning bird. You might even hear the rooster crowing in the same dream. Your brain may have created this dream to remind you to wake up early. You might have been thinking of waking up early on the night before you slept.
The rooster is a bird that wakes up early in the morning, to take advantage of the day’s full daylight hours. It represents an animal who wants to make good use of daylight hours.
For a human to dream of a rooster, it can mean you should “Make hay while the sun shines”, by using your time wisely.