At feeding time the kudu herd was brought inside the barn for their grain. It became fairly crowded inside and, as might be expected, there was often quite a bit of aggression as the animals jostled for a space at the feeding trough.
One older female, at the bottom of the pecking order, found a better way. She would wait outside the door until the rest of the herd was inside and then bark loudly—the kudu alarm signal. When the others charged out of the stall in a panic she would calmly step inside. By the time the herd calmed down enough to come back in, she had eaten her fill.
She didn’t do this every day, or it no doubt would have stopped working, but she was seen to do this on more than one occasion and it seemed to the keeper to be intentional.