WMorten Thrane Brünnich was a Danish zoologist and mineralogist.
WNiels Kjærbølling was a Danish ornithological writer and lithographer.
WNiels Kaare Krabbe is an ornithologist and bird conservationist for many years based at the Vertebrate Department of the Zoological Museum, University of Copenhagen and tutored by Jon Fjeldså. His research interests include various aspects of ornithology, especially bioacoustics, conservation, and systematics and altitudinal replacements of Scytalopus tapaculos. He has worked extensively in the Andes, especially Ecuador, and wrote the passerine section of Birds of the High Andes (1990) and the accounts of most Andean species in Threatened Birds of the Americas (1992). He has helped build up a large tissue collection in the Zoological Museum and has authored or coauthored several bioacoustic publications and peer-reviewed papers in scientific journals.
WHans Christian Cornelius Mortensen was a Danish teacher and ornithologist. He was the first to employ bird ringing for scientific purposes.
WOtto Friedrich Müller, also Mueller was a Danish naturalist and scientific illustrator.
WSverri Patursson (1871–1960) was a Faroese writer, author, and journalist. He was also a translator, ornithologist and environmentalist.
WErik Ludvigsen Pontoppidan was a Danish author, a Lutheran bishop of the Church of Norway, an historian, and an antiquarian. His Catechism of the Church of Denmark heavily influenced Danish and Norwegian religious thought and practice for roughly the next 200 years after its 1737 publication.