Turn the aerator housing counterclockwise and remove it from the faucet. Pull the O-ring off the tip of the faucet spout with your finger. The O-ring prevents leaking between the housing and the faucet. Set the O-ring in a safe place until you are ready to reinstall the housing.
After that, they are referred to as yearlings or stirks if between one and two years of age. A castrated male is called a steer in the United States; older steers are often called bullocks in other parts of the world but in North America this term refers to a young bull.
He could be called a bull calf before he is weaned or a yearling bull if he is about a year old (more or less). For a fair number of producers, especially those from the European Union and a fair few in North America, it is known as a <b>bullock</b>. However, a number of others also refer to such an animal as simply a <b>young bull</b>. He could be called a <b>bull calf</b> before he is weaned or a <b>yearling bull</b> if he is about a year old (more or less).