Orioles are arboreal birds, and when they descend to the ground, it is mainly to gather nest materials.
Orioles are arboreal birds, and when they descend to the ground, it is mainly to gather nest materials.
白头翁主要生活在空中，到地上来时，主要是为了收集建巢材料。
Orioles are arboreal birds, and when they descend to the ground, it is mainly to gather nest materials.
白头翁主要生活在空中，到地上来时，主要是为了收集建巢材料。