An explosive burst of long (~5-7 seconds) powerful, throaty, highly modulated and overlapping rumbles when members of a social group come together after a period of more prolonged separation. We refer to these calls as Greeting-Rumbles. Typically, participants approach one another face to face and then, when they meet one another, may turn or Pirouette to stand in parallel while Head-Raising, Ear-Lifting, and streaming with Temporin. Audible Rapid-Ear-Flapping may be heard as the calling continues and the participants may Urinate and Defecate, and may engage in Tusk-Clicking, Open-Mouth-to-Open-Mouth, High-Fiving and reciprocal Trunk-to-Mouth. After the initial explosive greeting, an exchange of lower intensity and less modulated Rumbles continues as the greeting proceeds.
Pat Derby, Ruby and others come together with a Purposeful-Walk. As they approach one another we hear deep Greeting-Rumbles and they begin Rapid-Ear-Flapping. A young female opens her mouth (Mouth-Open) and gives a loud Social-Trumpet. Ruby (tuskless) is streaming with Temporin. The Rumbling continues as they move rapidly forward with Pat Derby in the lead. Pat Derby gives a loud Ear-Slap and as she turns we see that she, too, is streaming with Temporin.
As they come closer to the camera we hear more and very clear Greeting-Rumbles. Ruby pauses to Urinate and we see that in addition to Temporin she has Ear-Secretion. Pat Derby comes forward and stops to Listen, then she Rumbles really loudly as if in response to someone she can hear. Ruby listens, too, and we think we heard a distant call - several respond. All get Temporin, even the calves though the adult females are really streaming. A minute later after the end of the clip they meet others and there is a loud exchange but the filmmakers had car difficulties.
We hear roaring and a social trumpet. We see later that there is Greeting-Ceremony that the filmmakers missed that is with matriarch Gina f0263 and others. So while it might be tempting to think of these calls as Contact-Rumbles by the context the sound quality and the behavior matches Greeting-Rumbles. (Maasai Mara, Kenya)