Here's a video I took of the difference. There are two hens down by lake to the left of the dock. It's hard to see them in the video but you can certainly HEAR them! Then at about 13 seconds in, you'll hear and see the male come in to the video from the right side of the screen and the hens start clucking at him. You can hear how he's more "croaky" and the girls are just LOUD! LOL! Can you hear the difference?