By © Hans Hillewaert, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=2420483
Korhaan
Sources:
(*) https://en.wikipedia.org/wiki/Ludwig%27s_bustard
(*) https://ebird.org/species/ludbus1
(*) https://search.macaulaylibrary.org/catalog?taxonCode=ludbus1