Ostriches primarily eat plant matter and live in nomadic groups that can contain up to fifty birds. When threatened, the ostrich will either hide by lying flat against the ground, or will run away. If cornered, it can attack with a kick from its powerful legs.
Ostriches and emus are raised for their feathers, hides, and for meat. Here in East Texas, in fact here on my little ranch, people raised emus as livestock about 20 years ago. When I tell folks in town where I live, they often say, "Oh, yeah, where the emu farm was."
|Getting a pearl out of an oyster|
I had an adventurous spirit and vivid imagination as a child, and I practiced holding my breath under water, knowing divers held their breath for a long time. When I made it to three minutes, I thought I was ready. Unfortunately, I had no way of getting from Michigan to Japan.
The largest pearl-bearing oyster is the marine Pinctada maxima, which is roughly the size of a dinner plate. Not all individual oysters produce pearls naturally. In fact, in a harvest of three tons of oysters, only three to four oysters produce perfect pearls. This has led to more pearl farms, where farmers culture a pearl by placing a nucleus, usually a piece of polished mussel shell, inside the oyster. In three to six years, the oyster can produce a perfect pearl. These pearls are not as valuable as natural pearls, but look exactly the same. In fact, since the beginning of the 20th century, when several researchers discovered how to produce artificial pearls, the cultured pearl market has far outgrown the natural pearl market.
The pearls in this picture are not mine, but this is what mine look like. I also have a half of an oyster shell like this that I use to hold rings.
The first two pictures are courtesy of Wikipedia, which is where I also snagged the facts. This last picture I purchased from iStock for a possible book cover.