Halcyons are too busy keep near extinct species alive (x3), holding a very hostile, highly advanced and in high number specie at bay over a huge barrier lasting solar systems, and keeping their own specie alive as possible, AS WELL as preparing to save the homeplanet of each species when the universe end, preparing for the next cycle. A cycle is a universe explosion (Where it starts with explosion, then implosion. Universe would be an ongoing explosion. )