I learnt how to understand when Chickens are in danger in linguistics class. Even though I hate the course so much, that's one that I can say I enjoyed learning.
Never used to like being around Chickens especially the Hens with chicks due to their violent nature but learning their language when they're in danger made me pay attention to my neighbor's and it was amazing. Mother Hens mostly makes those sounds when there's a hawk hovering above them. The chicks hearing the warning from their mother, takes cover. It's the cutest thing to watch and very sad when mother hen cries after losing a chick to a hawk.
Would really love to read that comic but I don't think it'd be available in my region.
It's crazy people think animals are dumb. Spend time with them and you realize how intelligent they are, and yes, their communication skills! Really interesting to hear about your linguistics lessons!