A broody hen is definitely contagious, so something going on for sure.Update: The 2 BR who are visiting Goliath laid eggs this morning, in the DL on floor of run. So, the "masculine" hen is still laying, and the hen who was toying with being broody is just playing the game for now.
Meanwhile, in the big coop, mayhem reigns this morning. Hens were piled up at the nest boxes, with 3 hens fighting over the box I pulled the "wanna-be" broody out of last night. There were already several eggs in that box. There were 3 hens stomping around, voicing their displeasure that they couldn't find a box to suit their needs. One of them was trying to squish between wall and the broody pen cover. (the broody pen includes the 3 lower boxes, with a 2" x 2" hdw cloth cover which bumps the space out an other 3' x 4') I grabbed her and stuffed her into the now empty elevated broody pen and shut the door. She got busy, madly scritching and scratching around in the bedding, and completely buried herself under the hay, yelling all the whole time.
After feeding all the birds, I came back to let the hen out of the raised broody pen, (no egg) and paused to check on Broody #2. She has at least one peep this morning. Her chicks are not due until at least tomorrow afternoon!
All of this activity in the viscinity of broody #2 this morning makes me wonder if there is some pheromone release that may cause the rest of the hens in a flock to get hormonal when one of their members is in Mommy mode.