As it got lighter, I started getting pictures of the displaying males around me. Here is a non-breeder just east of me as the sun rose, the sun lighting up his fanned tail feathers.
The dominant cock of the lek was surrounded by 11 hens after the sun came up. Here he is with three of them. None of them squatted and spread her wings indicating a willingness to be bred.
I thought this hen would eventually welcome his advances while the sun was shining, but it would not happen. All of his displaying was wasted.
After all the hens wandered off into the sagebrush, the dominant male displayed for 30 minutes trying to entice them back to the lek. Here is a series of his display. First he sucks in a big breath of air.
Then he puffs out his chest air sacks a little.
He then rubs his wings on his chest making a squeaking sound as he takes in a huge breath of air. Notice his mouth is wide open and he has extended his body and legs to allow the greatest intake of air. From the side view, he would be leaning backward.
Next he brings his head down, burying it in his white collar, forcing all the air into his air sacks, pushing them out and making a loud "plopping" sound.
With the air sacks being stretched to the limit, they show wrinkles as the air escapes.
With 30 to 40 males displaying on one lek, it can be very intertaining and a wonderful way to spend a few hours watching another wild day in Idaho dawn. I was back home by 8:15 in time to do yard work.
Sorry this was so long - could have been longer, but this will suffice.