There is something living in the north-facing wall of our apartment. My partner and I have narrowed it down to an organism in the phylum Chordata; though we have not seen the thing, we are fairly certain it has a backbone. It likes to make squeaking or cawing noises at 4 a.m. Sometimes the noises make it seem very small, like a house mouse, and sometimes the noises make it seem very large, like a well-nourished raccoon. Or perhaps it is a bird. Perhaps it is a new, awesome bird species.
We know so little about the organisms that live with […]