My eldest son is a real good caller. On a clear cold windless morning he likes to start off by breaking a thick dry stick , one that will make a really loud echoing CRACK (this seems to really attract their attention) .After awhile he will start his long moaning (pleading!) cow calls which last for about 6 to 10 seconds followed by a few minutes of silence as we listen for a response .
I've watched a cow do the so called "urinating " thing in a beaver pond . She wasn't pissing in the water , she was feeding on some aquatic roots . She would stick her head completely under the belly deep water , grab a mouthful of food, lift her head up with a loud torrent of water cascading off her head and mane .She would wait , listening intently until the water sounds diminished to a few "plink plinks" then repeat every thing .I never heard a bull call but one big fellow came smashing and crashing out of the surrounding tag alders with so much noise he scared the cow and calf out of the beaver pond . If they had stayed in the pond (20 yds away from me ) I would have gotten a good shot at him with my compound bow .Sadly he was just out of reach at 50 yds. hot on trail of the cow and calf.