FURTHER TO THE BELOW!
Hey everyone, if the petulant photo of Clifford that I just posted below has you worried that a "birdsbesafe" collar will irritate your cat, please see this additional photo, of my other two cats (Zipper and Millie) taking a nice nap together while wearing their fancy collars. Doesn't seem to be interfering with morale at all!
Truly, they couldn't care less about it.
Clifford was just annoyed that I had stopped petting him for 10 seconds in order to take his picture. He loves his fancy collar. He thinks it makes him look distinguished.