First there were sirens. Coyotes often respond to fire-engine or ambulance sirens. This older alpha male responded with howls as you hear here.
Then he stopped and listened. This is the part that’s most interesting to me: the listening. His family was responding to him. Notice him cocking and turning his head as he listens intently, trying to catch every meaningful sound in the reply howls of various family members — they are in the far distance, but you actually can hear them in the video.
His family consists of his mate and two of his mate’s yearling offspring. He himself joined the family only a year ago, shortly after the then-alpha-male died.
He was listening for WHO in his family was responding and where they were — each coyote has his own distinctive signature howl that includes a certain voice and pattern — I myself can distinguish some of these, and of course he would be able to discern their locations. Also, though, he was picking up on everything else being conveyed in their vocal responses conveyed by duration, tone, urgency or lack thereof, etc: there’s a lot of information there that we humans have not learned to decipher. Most of it, I believe, is emotional states. After discerning what he wanted to know, he then belted out his own long reply.
I have a whole page on vocalizations if you want to delve deeper: Coyote Voicings.
When he began kicking the dirt — a usually angry reaction — I turned around to see what had prompted him to do that. A walker and his dog had stopped close to me to listen, and the coyote appeared to be reacting negatively to that presence. Coyote often react to dogs and even intrusive photographers in this manner.
When the vocalizations stopped, the dog and owner walked on, and the coyote went in the direction of the howls he had solicited.