Bonnie's in a romantic mood today

When Iris and I went outside to check what sort of day it was going to be, I heard Bonnie bawling and bellowing.  Now normally, the only time she gets vocal is when I call her from far away or when she's separated from her calf.  I went around the barn to make sure her calf was with her; there they both were, lying down.  Bonnie bawled at me a couple of times, lying down.  This is not a normal occurrence; I suspected she might be in heat.  Sure enough, when she got up, she tried to "ride" her son.  
I'd love to try breeding her to a Jersey bull by way of artificial insemination, but it's hard to detect the right time to breed a cow if there's no cow around that's big enough to mount her, because that's how "standing heat" is determined.  
In a couple of weeks, if Cliff's brother has purchased a bull, we'll probably haul Bonnie and her calf over there to spend a few days.  He's been considering buying a Shorthorn bull this time around, which wouldn't be a bad mix with a Jersey.    

Meanwhile, Bonnie looks this way

and that way

and tries to jump on her calf:  Oh, this is wrong on so many levels!

"My Prince Charming has to be out there somewhere!  Mooooo!"

"What's wrong with my mom?  She's never acted like this before."

"C'mon, Mom. Stop that!"

By tomorrow Bonnie will have forgotten all about the yearnings that torture her today.  In three weeks it will happen again; hopefully when it does, she will be in the presence of her Prince Charming.