Mike, you need to turn that talk into a YouTube video and put it out there for posterity. School children will discover it when they have to do reports on Mark Twain.

The monotone microwave beep bird may just be imitating an appliance.
I have heard the local mockingbirds mimic car alarms. Seriously. They used to go off so frequently that the birds picked up the "call." Not so much lately because 1) car alarms work better and 2) more neighbors park their cars inside garages.