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.
1 Bred Heifer: a female bovine that is pregnant with her first calf. 2  First-calf Heifer or First-calver: a female bovine that has given birth to her first calf, and is often around 24 to 36 months of age, depending on the breed and when she was first bred.o visit a farm or ranch to learn the anatomical differences as described above. This will help you learn to know what to look for and how to properly distinguish the difference between bulls, cows, steers and heifers.