I've just been dipping in and out of "Frazer's Golden Bough"** and I came across this reference to the thrush as part of an example of ancient homoeopathic magic. Not North American, but I thought you might be interested.
Apparently the ancient Hindus used to perform an elaborate ceremony for the cure of jaundice. The aim was to banish the yellow colour to yellow creatures, leaving a healthy coloured (i.e. red) patient. The priests used to recite this spell : “Up to the sun shall go thy heart-ache and thy jaundice: in the colour of the red bull do we envelop thee! We envelop thee in red tints, unto long life. May this person go unscathed and be free of yellow colour! The cows whose divinity is Rohini, they who, moreover, are themselves red (rohinih)—in their every form and every strength we do envelop thee. Into the parrots, into the thrush, do we put thy jaundice, and, furthermore, into the yellow wagtail do we put thy jaundice” This was recited whilst the patient sipped water containing the hair of a red bull and whilst sitting on a skin of the same. Said patient was also covered in a yellow porridge made of turmeric and had 3 yellow birds (a parrot, a thrush and a yellow wagtail) tied to the foot of the bed by yellow string. Water was then poured over the patient to wash off the porridge and with it the jaundice out of him and into the birds. Finally, some hairs from the red bull were wrapped in gold leaf and glued to the patient’s skin.
I think it would cure me !!!
** A classic study in comparative folklore, magic and religion showing the parallels between the rites and beliefs, superstitions and taboos of early cultures and those of Christianity. I'm suffering from sciatica at the moment and am finding it difficult to sleep; I thought it might help !!