This is a fine novella in the European existentialist tradition.
In just 77 pages we experience the identity crisis of Jonathan Noel – a French security guard who for three decades has lived in the same small apartment with the same job, and minimal interaction with or exploration of the outside world. Until, in his fifties, he encounters a pigeon in his apartment building – its eyes penetrating him, it’s excrement soiling the floor and its presence fundamentally unsettling his ordered world.
He had successfully managed to shut out the messiness and ambiguity of things outside of his experience but the pigeon appears and reveals the precariousness of his life – how he can’t control events, and how he could as easily have been a bum and, indeed, given the sameness of his life, it might have been more meaningful.
There’s a great bit when he sees a bum eating sardines and bread, and drinking wine with abandon. And then, a little later, Jonathan goes and buys the same stuff and enjoys it with an intensity of pleasure he perhaps has never experienced before.
What the novella expresses brilliantly is the the unstable nature of our identities, of what we build our lives around, and how things could be so easily different.