can't imagine how monarch butterflies migrate

from Singapore to mountains in Mexico every fall, across a half of the earth!

所有跟帖： 

• 加州Santa Cruz的一些地方会密集的聚集这类蝴蝶。 -Gbdjw- ♀ (0 bytes) () 07/19/2018 postreply 21:30:52

• Every fall, they all fly back to the mountains in Mexico --worldance-- ♀ (161 bytes) () 07/19/2018 postreply 21:37:28