SO: v7 (First Timers)

MAKING BIRD CALLS 1:   Edison’s phonograph vibrated paper to make sounds. Older phones vibrated little plastic discs to reproduce voices.

MAKING BIRD CALLS 1:   You can easily see the larynx of a man, the Adam’s apple, which contains the “skin” we vibrate (vocal cords) to make our voices.

MAKING BIRD CALLS 1:   Birds use the syrinx to make sounds. It is located very high in their throat.

MAKING BIRD CALLS 1:  The “air tunnels” in birds have membranes that are moved in them. This makes much of their sound. It’s a little like when you hold a piece of paper out of a car window.

MAKING BIRD CALLS 1:   Sometimes in birds there is a balloon-like bag that helps make their sounds. This makes sounds like the peeping of little chicks.

MAKING BIRD CALLS 2:  Oftentimes these syrinx skin membranes are attached to super-speed tendons—the fastest on earth.

MAKING BIRD CALLS 2:   These super-speed muscles are also used for a rattlesnake’s rattle shaking.

MAKING BIRD CALLS 2:   Some birds can sing the number of notes on a piano in a single second!

MAKING BIRD CALLS 2:   Birds can also make two entirely different and very complex sounds at the same time like a piano player can.

MAKING BIRD CALLS 2:   Making bird songs is very simple.