Zenryaku, Yamagurashi wo Hajimemashita.

Shouhei Sano is fed up. His fiancée left him, and he's sick of dealing with people. What's a guy to do in the face of intense burnout and social exhaustion? Why, buy a mountain, of course! Sano abandons his life in the city and becomes a recluse, far away from the trappings of modern society. There's just one problem: He's actually kind of lonely... Sano thinks he's found the solution, but he gets more than he bargained for when he buys three colored chicks from a festival stall to keep him company—not only do they grow rapidly and develop reptilian tails, but they seem to be able to talk! Between learning the ropes of mountain living, getting acquainted with his rural neighbors, and raising his questionable but adorable chickens, Sano's got a lot on his plate. Long story short, his solitary new life might turn out to be more exciting than he anticipated!

(Source: J-Novel Club)