Krötenwanderung (German) comes from German Wanderung, from German -ung, from Middle High German -ung, from Old High German -unga, from Proto-Germanic -ungō — -ing, -ion. "Forms gerund nouns from verbs.".
Krötenwanderung (German): toad migration
Definitions
toad migration
Ancestry of “Krötenwanderung”, step by step
Krötenwanderung traces back through two separate lines of ancestry.