Is it true that roosters crow in the morning to notify everyone that the sun has risen?

First and foremost, it’s important for us to point out that roosters will crow at all times and in response to a range of seemingly innocuous stimuli, like the sound of a car or someone walking into their coop. This is because the crow of a rooster serves several functions.

Along with being used as a warning of sorts to let other roosters known the boundaries of its territory, the crow can be used to communicate with other birds and sometimes to celebrate getting lucky; roosters really aren’t picky when it comes to excuses for crowing.