河边的水草里、稻田里时常见到水鸟的窝，水鸟的蛋，有时还有刚出壳的雏鸟。
B-Location I-Location O B-Thing I-Thing B-Location O B-Location I-Location I-Location O O O O B-Thing I-Thing O B-Thing O B-Thing I-Thing O B-Thing O O O O O O O O O B-Thing I-Thing O