Thoth, The Ibis-Headed
 
From Wilkinson’s Manners & Customs of the Ancient Egyptians.

It is doubtful that the deity called Thoth by the Egyptians was originally Hermes, but the two personalities were blended together and it is now impossible to separate them. Thoth was called "The Lord of the Divine Books" and "Scribe of the Company of the Gods." He is generally pictured with the body of a man and the head of an ibis. The exact symbolic meaning of this latter bird has never been discovered. A careful analysis of the peculiar shape of the ibis—especially its head and beak—should prove illuminating. MPH