When does a rooster start to crow?

[DianeS]

If I decide to start with a straight run of baby chicks, I'll need to know when my neighbors would start reporting me for having roosters! When does a rooster start to crow? And when would he crow loudly enough that a neighbor would hear?

 

[wing it]

4 to 5 months and when the start the will crow loudly enough for a neighbor would hear