What is the sound a roo makes to alert the gals? I don't have a roo, so I don't know what the alert sound is. Does anyone have it on youtube? I searched, but didn't find it. According to this article from the Animal Science dept at the University of Alberta: "Roosters guard their flocks and produce different types of alarm calls depending on whether a predator is in the air or on the ground. These calls are very different from one another and the hens respond by showing different types of behavior. Hens will crouch when given an aerial alarm call, whereas they will stand erect when given a ground alarm call. Even though hens respond to both types of calls by surveying the area, they are more likely to look upwards and run for cover when given an aerial call. In these types of circumstances, listening to the rooster may be vital for the hens survival." I'd be interested in knowing about both the aerial alarm call and the ground alarm call.