What is the name of the vocal display male emperor penguins use during courtship?

Male emperor penguins use an ecstatic display as a courtship vocal and visual performance.

The ecstatic display is a conspicuous behavior in which a penguin stands upright, stretches its neck, moves its flippers, and produces loud calls. It helps advertise the bird’s presence and may attract a mate or reinforce pair relationships. Emperor penguins also use quieter, individual vocal signals to recognize partners and chicks within crowded colonies.

The term does not mean that the bird is experiencing human-style ecstasy. It is a traditional behavioral label used in penguin biology for this conspicuous display. The behavior is particularly important in a species that breeds in dense, noisy colonies where posture and voice both help maintain social contact.

Emperor penguins breed on Antarctic sea ice and do not build conventional nests. After the female lays a single egg, the male balances it on his feet and covers it with a brood pouch while she goes to sea to feed. That unusual breeding system makes accurate individual recognition especially valuable.