What Did Birders Do Before the Internet?

There is a bird in my yard that says "cheeseburger! cheeseburger! cheeseburger!" and it only took me three minutes to learn that it is a Carolina Wren (and not a black-capped Chickadee) though both these birds say "cheeseburger," but the Carolina Wren says it much faster and clearer . . . but why I am I wasting my time using langauge to explain this . . . watch the Youtube video!