It is helpful to know that someone else is having a similar experience with TWO chickens that pretend to lay eggs. How long has this Behaviour been going on? Our Buff has been playing this game for 4 months without a single egg produced in that time. I've come to the conclusion she is a DUD (for unknown reasons). She is a sweet hen, notparticularly interested in The Pecking Order, as some hens are. Perhaps she will be interested in hatching a few eggs of the other chickens next spring??? We Shall see ....
My first hen who did this (or at least the first one I noticed) has always been my best layer, she even laid every day throughout winter even though I provided no extra light. She started fake laying in late spring/early summer but is now back to pretty normal laying.
The second hen is at the bottom on the pecking order and never really started back up last spring, very random eggs. I thought it was just because the other hens are so dang mean to her, she is so jumpy and scared that I figured she was just too stressed to lay. In August I noticed I was seeing her in the nesting boxes a lot and congratulated her on working through her mental issues lol NOPE she was just teasing. She goes in the boxes multiple times a day, sometimes for hours and hours. She did lay one egg last week, it was pretty small, and she cackled like crazy, must have been pretty proud lol
The first hen did her egg song every day of fake laying, the 2nd hen does not. They have been driving me nuts and I'm constantly checking them for bugs and watching the behavors and eating/drinking. They are physically fine, just mentally a pain in the butt lol