Well, I don't know the correct term for this, or if there even is a correct term, but what happens is, my chooks will just freeze in their tracks while in the middle of foraging around in the yard, and stay that way for the longest time. There are only four of them. They'll be out free-ranging, and the freeze generally seems to be started by one of them, the oldest bird. She'll often make a very low, growling sound, and she and the three others will just freeze in their tracks for up to 15 minutes, even if they're separated by quite a distance. Not even moving a foot, or the position of the head - just frozen - hypnotised. The old hen doesn't always make an audible sound while this is happening. At first I thought it was some kind of predator warning signal, but I've seen the real predator warning signal - different sound and different behaviour - they'll generally go running under the house! This is just odd. No sign of any danger, and anyway, the length of time of the freeze-up makes it seem more like a mesmerised state. Can anyone shed any light on this? Most intriguing. Cheers, Josh.