Human environments are built for people to inhabit, but some birds can't see or think clearly enough, and are killed or injured because of structures. Is this the birds 'problem? Or a human failing?
人類的環境是為人類居住而設計的，有些鳥沒看清楚，因人為建築構造而受傷或死亡，這算是鳥的疏失，還是人的不周到呢？