For a commenter: Cheeseburger birds :)

Right around 27 seconds in the first video is what I hear around here when the Carolina Wrens come by, but louder and clearer :)




This one is close, but not exactly it: our local birds seem to have more of a "CHEESEburger CHEESEburger CHEESEburger CHEESE" call, this one seems to leave off the last "CHEE" sound.




Hope this helps, or at least entertains my bird loving friends.