[BrainDeleted]

Originally Posted by Baron Spikey

All in all, I think there are more Tyranids than every race in this Galaxy combined, living AND dead (and thats an extra few trillion just there)- thats how large I believe the entire Tyranid 'race' to be.

Pure speculation.

The milky way could be their second Galaxy? Their third?

The Tyranids could be fleeing their galaxy of origin after being driven out by what ever races existed there.

There is no stock pile of Tyranid warriors waiting to go into action anywhere. When not fighting they are in stasis traveling to the next galaxy, while in this state they're actually losing bio mass so when they pounce on a galaxy it is all or nothing. When a hive fleet is first encountered the LEAVE NOTHING BEHIND strategy is perfect because they'll starve...stasis uses bio mass but minimal amounts, dropping onto a planet takes massive amounts of the fleets bio mass stores and without gain...its a waste.

Consider the Nercons. No biomass to gain but deadly deadly foes...They have to fight eventually if the Tyranids go full scale.

Speculation is all we got...Thanks GW