To answer you guys, here is Shichi is two states of fluffs… attraction, and embarrassment.
To be more specific, during ‘that time of year’ tengu do all kinds of things — feathers play a big part. Anything to make them more prominent, displaying arms/tails more openly, puffing up, etc… and sometimes its not even done consciously. Long, healthy feathers are considered very attractive. When actually attracted to someone, pupils dilate and their beaks grow warmer.
So, yes, they also puff up in embarrassment, fear, happiness, and other emotions. If you read the story, you can see Shichi react with his feathers on occasion (ie: when Kana pets him).
Not quite a joke, but tengu monks aren’t sworn in until their first winter after puberty. By then they’ll have figured out if they’ve made a ‘huge mistake’ or not.
De jisuk - Source 10juil.2013