I think the bird got out!
At around 3:30 I noticed that the noises stopped and I feared the worst. I couldn't reach the bird guys and they just plain didn't show up. When Rich got home, he took apart the duct and cleaned it. No bird. Then he hooked the leaf blower up to the exhaust tubing (which is about 30 feet long). It looked like a mushroom cloud coming out of the vent! He installed the vent bird shield and there should be no more bird problems. Yay!
Today is going to be so beautiful...temps are going to reach the 70s! I'm going to get some orders out this morning and then I'm going to head out to do something fun.