Individuals occasionally escape, and these have been proposed to be responsible for sightings of "Big Bird" cryptids; the Saddle-billed Stork is the most likely basis for the Kongamato.
The Kongamato ("breaker of boats") is a reported pterosaur-like creature said to have been seen by the people of and explorers in the Mwinilunga district's Jiundu swamps of Western Zambia, Angola and Congo.