NABU Vogelwelt Vögel Bestimmen
Sunbird Images OHG
Nabu
Nabu Offical Team
NABU: Multilingual kids books
NABU.ORG
NABU Insektenwelt - Insekten Entdecken & Bestimmen
BirdNET
Stefan Kahl
Picture Insect: Bug Identifier
Next Vision Limited
iNaturalist (愛自然)
iNaturalist
Birds of Europe Field Guide
Ecosystema
Merlin 鳥種識別 by Cornell Lab
Cornell Lab of Ornithology
Birdie Memory
Merle Blanc