I have a cast iron dinner bell shaped like an old fashioned bell with an American flag mounted to a post on the front porch. It has a small rope dangling down to ring it. So, yesterday I'm cleaning and I hear the bell. I'm like What the heck?? So I go look. Cuz with a cast iron bell it takes more than a breeze to ring it. I don't see anything. I go back to cleaning. A bit later it rings again. I ignore it. A while later it rings again, several times. Now it's a bit breezy but no where windy enough to ring the bell. So I go look. I peek out the blinds on the front door. I see a female bird perched on the porch railing. A male is on the steps. I think....No way. Are they playing with my bell? So I wait. I stand there for 10 mins peeking out the blinds looking like an idiot. Then all of a sudden they fly up grab the rope and ring the bell! They were at it all afternoon. Everytime I had the camera in my hands they'd fly off.