Does this happen to anyone else??

probably a question of perspectives. moving ants and other tiny insects would make anyone cringe, since we also imagine how horrible it would feel to touch them. birds and such also give us a sensation of being overwhelmed. maybe it reminds you of something you saw as a child - some terrible sight which had all these elements - swarming insects and birds. talk to someone about what you may have seen as talking about it dilutes some of the effect. for years i felt great disgust when i looked at certain mushy foods, only to remember choking on mashed potatoes as a child. so think hard or consult someone.