The spring bird migration is a period of time between February and June when birds leave their winter homes in the south and begin their journeys north.
The spring bird migration is a period of time between February and June when birds leave their winter homes in the south and begin their journeys north.
The spring bird migration is a period of time between February and June when birds leave their winter homes in the south and begin their journeys north.
The spring bird migration is a period of time between February and June when birds leave their winter homes in the south and begin their journeys north.