By gisela gerson lohman-braun https://commons.wikimedia.org/w/index.php?curid=33877845
Heuningwyser
Sources:
(*) https://en.wikipedia.org/wiki/Greater_honeyguide
(*) https://ebird.org/species/grehon2
(*) https://search.macaulaylibrary.org/catalog?taxonCode=grehon2