By Derek Keats from Johannesburg, South Africa - https://commons.wikimedia.org/w/index.php?curid=44606255
Mees
Sources:
(*) https://en.wikipedia.org/wiki/Southern_black_tit
(*) https://ebird.org/species/soublt1
(*) https://search.macaulaylibrary.org/catalog?taxonCode=soublt1