noun
Pallas's rosefinch
A species of rosefinch (Carpodacus roseus) found in East Asia. In Japanese, the name is almost always written in katakana.
冬になると、オオマシコが日本に渡ってくる。
In winter, Pallas's rosefinches migrate to Japan.
The name オオマシコ is a compound of 大 (large) and マシコ (rosefinch). The exact origin of マシコ is uncertain, but it is a traditional Japanese name for rosefinches.