Sparrows are among Japan’s most common wild birds. Only 15 centimeters in length, they demonstrate tremendous vitality and ingenuity. During breeding season, they might build their nests under the eaves of houses or even on a traffic signal. But their toughest season is the winter, when they face brutal cold and a lack of food. They must also fend off attacks by powerful predators. Watch how some of our nearest avian neighbors use their amazing life force throughout the year to thrive in a harsh environment.