わたりどwataridori
1.

A type of bird that regularly travels between a breeding area and a distant wintering location each year, adapting its migration patterns to the changing seasons.

2.

A bird known for its seasonal migration, dividing its classification based on whether it breeds, winters, or merely passes through specific regions during spring or autumn.

3.

A species of bird that moves between different habitats at distinct times of the year, such as summer and winter, in search of favorable conditions for breeding or survival.