Eggs; symbols of the beginning of life.
Travelling, migrating installations; may be found anywhere, unexpectedly.
Appearing ... disappearing ... as everything that has existed, now exists, and has yet to exist on Earth.

In the beginning, there was the O of the egg.
From the start, life, already fledgling, took flight.
Out of the egg ...
You have only to IMAGINE. 

In the beginning ... at inception ... from the egg ...