Birdcage

Question
Can you tell us where the word "Birdcage" came from and how and why it was applied to the mounting ring.

Answer
Hi Gayle,
          Good question! I don't know the answer but I will find out. My email is [email protected] so if you send an email to there I will be able to send you the answer as soon as I find out.
I assume it will be a term first used in the UK but time will tell.
Regards,
Don Boddie