Newt said, "They mostly come out at night... mostly." This wasn't always the case, the benevolent organisms often embraced the rising sun on LV-426. Little was known about them because no human had returned alive from the “shake and bake colony.” Today Wikileaks 2100 has released never before seen footage taken from one of Weyland Yutani’s deep space drones. It appears that the XENOMORPHS have daily routines, a collective farm if you will in which they cultivate daytime "seeding" that will inevitably sprout and grow into disgusting EGG SACKS that will sew destruction for all mankind. (pun intended) Viewer Discretion is ADVISED.