A river of words flowed between us.
Oology (or oölogy) is a branch of ornithology studying bird eggs, nests and breeding behavior. The word is derived from the Greek "oion", meaning egg. Oology can also refer to the hobby of collecting wild birds' eggs, sometimes called egg collecting, birdnesting or egging. Within the OASIS, it referred to those people who searched for Halliday's Hidden Egg.