This is the 4880th most frequent German word.
adlern
The word "adlern" is not a standard German term; it may be a misspelling or unclear reference.
The verb 'adlern' here refers to observing eagles in nature.
Er entdeckt die Landschaft während des Adlernens.
He explores the landscape while eagle-watching.
Again, 'adlern' implies the action of learning about or observing eagles.
Während des Adlernens lernte Sie viel über die Vogelwelt.
While eagle-watching, she learned a lot about birdlife.
'Adlern' in this sentence emphasizes the hobby or activity of watching eagles.