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Anyways, as we've done about half of the boards and reach the far end of the house, a female blackbird starts examining the wooden box around the gutter carefully at the other end, apparently interesting in using it for a new home. A few moments later the male blackbird, maybe its mate, does the same while we stand there, hammering boards in a few meters away.
Leave things alone a few minutes and life around you starts occupying the good spots. Nature or perhaps rather evolution is wasteful with life, but certainly not with space.
I sometimes wonder how fast a city would disappear if all humans were all suddenly extinct by a new plague-like disease.