By Charles J. Sharp - Own work, from Sharp Photography, sharpphotography, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=38010594
2.jpg)
By Charles J. Sharp - Own work, from Sharp Photography, sharpphotography.co.uk, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=116391296
_non_breeding.jpg)
Sterretjie
Sources:
(*) https://en.wikipedia.org/wiki/Whiskered_tern
(*) https://ebird.org/species/whiter2
(*) https://search.macaulaylibrary.org/catalog?taxonCode=whiter2