#caimo

I know some bare basics, although I have not personally worked with him.

Camio (also Caim, Caym) appears in "Ars Goetia," the first part of "Lesser Key of Solomon" as a Great President of Hell, ruling over thirty legions of demons.

He is a good disputer, gives men the understanding of the voices of birds, bullocks, dogs, and other creatures, and of the noise of the waters too, and gives true answers concerning things to come.

He is depicted in 19th and 20th century occultist illustrations as appearing in the form of the black bird called a thrush, but soon he changes his shape into a man that has a sharp sword in his hand. When answering questions he seems to stand on burning ashes or coals.

Other authors consider Camio a 'Prince' of Jinnestan instead and depict him as a man wearing rich and elegant clothes, and the head and wings of a blackbird.

You can easily find his sigil by googling it.

That is about the extent of knowledge I have on this particular demon.

If you plan to summon him, however, I recommend you check out my tag on Demonology, and Demonolatry.

Using the methods in Ars Goetia is not a good idea.