This bird usually lives in groups that include one breeding pair, several young "helpers", and sometimes one or two other adults. Red-and-yellow Barbets can be very aggressive, notably when defending their territories from other groups of barbets or woodpeckers. They are also known to mob hawks or other predators to chase them out of the territory. They are often seen around termite mounds.
The other stamps on the cover are from the "8th Crop Definitive", issued on 28th Feb 2001.