Birds with human heads exist already.

St.Catherine has told us nothing new." "The imagination groups and compares; it never creates," replied St.
Catherine drily.
"They exist already," continued St.Antony, who would listen to nothing.
"They are called harpies, and they are the most obscene animals in creation.

One day as I was having supper in the desert with the Abbot St.Paul, I placed the table outside my cabin under an old sycamore tree.

The harpies came and sat in its branches; they deafened us with their shrill cries and cast their excrement over all our food.

The clamour of the monsters prevented me from listening to the teaching of the Abbot St.Paul, and we ate birds' dung with our bread and lettuces.
Lord, it is impossible to believe that harpies could give thee worthy praise.
"Truly in my temptations I have seen many hybrid beings, not only women-serpents and women-fishes, but beings still more confusedly formed such as men whose bodies were made out of a pot, a bell, a clock, a cupboard full of food and crockery, or even out of a house with doors and windows through which people engaged in their domestic tasks could be seen.