I do know for sure one breed that I have; they are called turkens. Contrary to the name, they are not turkeys at all, they are 100% chicken. They are very distinctive, so I can tell them apart immediately. They have no feathers on their neck!
Another fact about them is that while they have no teeth as adults, the newborn baby chicks have one tooth. Technically, it is not a real tooth, but it is a hard point on the tip of the beak that the chick uses to break out of its shell with while hatching. The egg tooth, as it is called, soon falls off after hatching, but I noticed that a few of my chicks still had theirs when I got them, so I took pictures.
Another thing I discovered while doing research was that like any other group of people, people who raise chickens seem to have their own dialect! I had to learn new words, like Alektorophobia (the fear of chickens), bantam (a miniature chicken), Crop (a sac at the base of a chicken's esophagus that stores food), and many more. The word "buff" means a golden brown, not a rooster who is exceptionally muscular. Here's a real "buff":