This is the 13176th most frequent Russian word.
миграцией
Migration.
Here, the word "миграцией" is used to refer to the movement or migration of birds, highlighting its application in discussing ecological or biological phenomena.
Они решили бороться с миграцией птиц в заповедной зоне.
They decided to combat bird migration in the protected area.
In this sentence, "миграцией" refers to the phenomenon of people relocating, showcasing its use in social or demographic contexts.
В последнее время миграцией населения город сильно изменился.
Recently, population migration has significantly changed the city.
Here, "миграцией" is related to the study or analysis of migration, indicating its usage in academic or analytical contexts.