Having seen a number of documentaries on penguins, who seem anything but tongue-tied, this is a baffling idea. They seem garrulous and permanently participating in a cocktail party.
‘… as the northern call fell silent among the tongue-tied penguins of the Arctic floes …’
Source: Patrick Leigh Fermor, Mani: Travels in the Southern Peloponnese, introduction by Michael Gorra, New York: New York Review of Books, 2006 (1958), p. 144
