I've hypnotized my girlfriend. She doesn't believe in it, but she wanted to try a past life regression hypnosis session just for fun. I was able to get two past lives from her (thought we're tempted to think they're not actually past lives, but rather something else.) First, she believed she was a Polish girl during WWII, hiding in the sewer from the Nazis. She even started struggling against the German soldiers when she believed they were trying to capture her. Second, she believed she was Ponce de Leon, and she had been searching for the fountain of youth for she couldn't remember how long.
During the first past life, she spoke Polish to the German soldiers, but English to me (though her English was in a Polish accent.) And during the second past life, about half of what she said to me was in Spanish. She knows both Polish and Spanish, however, and I know enough to figure out what she was saying. Of course, we're tempted not to believe they're truly past lives, because she's been researching her family's past in Poland during the Holocaust for a novel she wants to write, and she once did a report on Ponce de Leon during elementary school.
But whether they were past lives or not, she was definitely in some sort of hypnotic state. I've seen many of my classmates hypnotized on stage as well, when a hypnotist visited my senior class in high school. He made them do things like believe they had no nose, and deliver a child.
Here's the script I read from to hypnotize my girlfriend:
http://www.choosehypnosis.com/awareness_induction.htm
http://www.choosehypnosis.com/past_life_regression_ii.htm
The first time it didn't work, but the second time it did. It's all about speaking in the most relaxing, hypnotic tone of voice you can manage. I guess my voice managed to work.
Heh, well, I'm not writing about hypnotized chickens per se. More like stage hypnotists/illusionists in late Victorian England. Think of a cross between Sweeney Todd and The Prestige, at least in terms of setting.
Have you seen
The Illusionist with Edward Norton? It's set in approximately the same time period and is also a great movie about, well, illusionists. I highly recommend it.