He has a tidbitting-type of bok for wooing that is deeper, more bubbly, than the similar but sharper, higher, “treats are here, this is great!” bok. It’s a little like the lowest swoopy part of the oropendola’s call, or a talking drum. He’ll make it when he sees Hazel near, or knows she is behind something near him. He starts fussing with whatever is at his feet and makes this sound.
His neck feathers seem looser and flop around more, and his throat seems to hang lower, but it may be just me imagining that as I hear how rich and resonant this sound is. Like a calabash over a drum of water; like some kind of grouse. I can try to get a recording. Hazel, the current love of his life. Unfortunately Hazel is not so keen on him.
A mighty fine Rooster

