Here one of over 100 males is displaying on a road. He stands at attentions and takes a deep breath.
Here he raises up taking a deeper breath.
His wings rub on his exposed chest making a squeaking sounds as he continues to suck in air.
Dropping his wings he sucks in more air. The deepest of all the intakes of air.
Now he starts to full the two large air-sacks on his chest.
The air that has filled his lungs is now transferred to the air sacks.
To completely fill the sacks, he buries his head between the air sacks. Notice the blood vessels running through the membrane of the air sacks.
He then releases the air and stands at attention to see if any of the ladies were impressed enough to visit him.
This is a dangerous place for these endangered birds to flirt and breed. It is a good thing that this road is usually only traveled by farmers and bird watchers, or many would be killed.
Here is a poor quality of a lifer for me. Not good but the best I could do today.
A Yellow-throated warbler to end another exciting day in the wilds of Idaho.