Is it normal to consistantly hear a buzzing sound in your ears?

I have it too. I've had it for several years now, there has to be some noise wherever I am or else the silence and buzzing/ringing will drive me insane. Even at night I have to sleep with a fan to help block it out.

Go to an ENT (Ear, Nose, Throat) specialist.

On a lesser note, there was a woman who complained of hearing "scratching" noises in her ear. She went to the doctor who discovered that she had flesh eating maggot larva in it!

It's tinnitus....Its VERY common. Like extremely...can be caused by a host of different reasons...most likely grinding or clenching your teeth...awake (clenching) or sleeping (either one). Do you wake up and your cheeks/jaw is a little sore ever?

I've had it for five years, you get used to it.

Did you injure your neck recently?
I hear constant ringing/buzzing due to a whiplash injury.

It's most likely due to headphone abuse. Well, I don't know really, but that's what gave me the exact same thing.

Buzzing in ear or tinnitus or ringing in the ears is a medical condition by which hearing noises not caused by an outside source are heard in your ears. The noises may either be soft or loud and may be categorized as a roar, buzz, hiss, hum, or ring. At times it can sound like blowing, whistling or sizzling. The noises or sounds may also be described as air escaping, running water, musical notes or noises emanating from the inside of the seashell.
The mild form of buzzing ear is experienced by almost everyone once in awhile and lasts for only a short amount of time. However, recurring tinnitus or buzzing in ear may be intimidating and stressful as well such that it affects your ability to sleep and your concentration.
The cause of buzzing ear has not been totally traced to a specific reason but tinnitus can be considered a symptom of almost all ear problems. Ringing sounds in the ears may be a symptom of ear infection, wax or foreign materials in the ear, injury from loud and disturbing noises and Meniere’s disease. Meniere’s disease is a disorder of the inner ear which is manifested by loss of hearing and dizziness. Drugs such as antibiotics and aspirin as well as alcohol and caffeine may also cause ear noises. Tinnitus may also indicate high blood pressure, allergy or anemia and of more serious ailments such as tumor and aneurysm.
- See more at: http://www.buzzinginear.com/#sthash.eMq3asVJ.dpuf

This should help!

I have the same thing but my nest is in a tree near a beehive.

Could be tendinitis.