抄録
An apparently bigamous breeding of Meadow Buntings Emberiza cioides which usually breed monogamously was observed from March to June in 1997 in Kanazawa City, Ishikawa Prefecture, western Japan. In the song area of an identified male, two females were engaged in the transfer of nest materials, consorting behavior and the flight with "chirrrr...." calls which is characteristically observed during the egg-laying and incubating periods alone on the same day. They completed their own nests. There were four young in one nest and at least one of them fledged successfully.
