S641 * Victorin's Warbler or Victorin's Scrub Warbler * Rooiborsruitesanger * Cryptillas Victorini

By Joseph Wolf - The Ibis, ser. 2, vol. 2, Public Domain, https://commons.wikimedia.org/w/index.php?curid=29607004

Sanger

Sources:
(*) https://en.wikipedia.org/wiki/Victorin%27s_warbler
(*) https://ebird.org/species/viswar1
(*) https://search.macaulaylibrary.org/catalog?taxonCode=viswar1