The head is made of either Goat skin, Calf skin, or Mylar (modern). In my opinion, the Goat skin heads are the best by far. They are thin, making them easy to manipulate for different sounds, and they give a crisp clean sound when played open. Calf skin is more durable and gives a deeper sound, but it is thick and more coarse which sometimes causes an uncontrolable scratchy noise. Being thicker, it is also harder to manipulate. Mylar heads, or other synthetic heads really don't offer much more than weather resistance. They sound pingy (a technical Bodhran term) and metalic, and are very hard to manipulate. the weather resistance dosn't offer that much of a benifit if the sound isn't up to snuff. The Goat and Calf skins both can withstand quite a bit of weathering anyway. The only real concern is a large amount of water in a small area of the skin. If this happens you will need to stretch the skin while it is wet (it's best to try and spread the moisture around first) to prevent getting any bubbles or waves in the skin.
That's my update for today. I'll keep at it, so just keep coming back. Click below to go back to my main page.