Now I am not certain but as far as getting 150 snouts, I feel that the more pigs you kill with birds of whatever color day it is you get more snouts. For example on yellow and black days it is really easy to get kills with Chuck and Zain. I've been tracking for a few weeks now and I dont miss 150 snouts on yellow or black day. Like I said, I don't know if this is just coincidence or maybe it is the key to getting 150 but this is just my observation. I was also wondering if critical hits play into how many snouts you get.... Let me know if any of you notice the same thing.