This vocalization here is the flip side of the “Stormy Monday” posting which depicted distressed vocalization by a coyote who had been pursued by a dog. I have seen that two vocalization types predominate in urban areas: 1) the distressed howls and yips due to the intrusion of a dog, and 2) The cheery howls and yips during greetings and long-distance social communications, which can occur at any time of the day or night.
These vocalizations here — although the one close by sounds a bit harsh at first due to the coyote’s proximity to the microphone — is a much more gentle and peaceful communication than in the Stormy Monday posting, engaged in by two coyotes after a siren has sounded. In this case, the coyotes are simply confirming their unity as a family, their well-being, location, and no doubt more about their mundane situation. It also may serve as a territorial message proclaiming ownership of the turf by the family: in other words, a confirming “Keep Out” message to other coyotes in the distance.
Coyotes are able to convey, who they are, where they are and how they are doing, something like: “Hey over there, how’s it going and where are you? I’m fine, looking forward to seeing you, nice hearing from you, see you soon!” The variety of sounds produced by each coyote often makes it sound as though there are many more coyotes than there really are. They produce a variety of tones, pitches, modulations, and inflections of their various sounds. The unique combinations, lengths and use of these various articulations form signature howls for each coyote. I myself can distinguish a number of coyotes from each other simply because I know their very individual howl patterns. Female voices tend to be higher pitched than the males.
Coyote Yipps 
