Simon Gray said this quote

“ JASON: 'Intended wings.' How depressing.MICHAEL: Yes. Makes them into suicides, really, the pigeons.JASON: No - no, it doesn't. It could mean the wings were 'intended' to carry them upwards, out of the darkness, but they were defective in some way, these wings, so the pigeons aren't suicidal, not at all, just badly equipped for flying. Like the rest of us. ”