The opening sequence displays the activities of an avian (bird) brood parasite, which are organisms that rely on others to raise their young. The brood parasite manipulates a host, either of the same or of another species, to raise its young as if it were its own, using brood mimicry, for example by having eggs (or pudgy, weird babies) that resemble the host's. This behavior relieves the parasitic parents from the investment of rearing young. Some bird species mitigate the risk of egg loss by distributing eggs among a number of different hosts.

Imogen Poots and Jesse Eisenberg previously starred in The Art of Self-Defense.

The title is Latin for "place of life". It also alludes to an area, usually enclosed, for keeping and raising animals or plants for observation or research. Often, a portion of the ecosystem for a particular species is simulated on a smaller scale, with controls for environmental conditions.