When you reach the room with sleeping Unggoy, continue further towards the back of the room and there is a Jiralhanae urinating in a corner. Originally, he has his hands in front of him, but after a short time he will move his hands behind his head and then shake the excess urine off himself. After a while he will move into the main hallway and get into position waiting for intruders. The Easter egg can also be seen later in the level during the series of rooms directly before reaching the Cartographer. Strangely, if you look closely at where the Jiralhanae has urinated in, there are white spots or patches, rather than the normal human urine color of yellowish greenish. It is not known whether or not Jiralhanae have white colored urine or the same color of urine as humans.