Here's Rembrandt's illustration

of The Angel Appearing to the Shepherds.
(If you have trouble seeing this, the angel is at five o'clock from the cloud-hidden light -- a quarter of the way across the picture from left to right and standing on a cloud at the middle (vertically) of the picture. The angel, of uncertain sex, is waving with his or her left hand. The shepards are in the clearing below.)

They may have been the last to see him alive. Recent strenuous searches...

have yielded few clues as to why there have been fewer angel sightings in recent years. Notwithstanding their empirical absence, experts can tell us a great deal about them. You can investigate this issue further on the internet, starting at Susan Wink's Angel Links.

Fortunately, we still have angelfish.