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Because these features are so common in their world it would mean that eventually the characters' actions or thoughts would touch on these features a little at a time. So give your readers the deta...
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#3: Attribution notice added
Source: https://writers.stackexchange.com/a/42315 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
Because these features are so common in their world it would mean that eventually the characters' actions or thoughts would touch on these features a little at a time. So give your readers the details of the features a little at a time as it becomes relevant. (i.e. Jan loped through the crowd so recklessly that she had to use her tail to keep her balance more than once. Her wings she kept tucked close to her body -they would see her if she took to the sky.) There are various ways to sneak the features in, but make sure they are only added when it makes sense for the character to acknowledge that feature. We humans notice different features on each other or ourselves when we are comparing things, or something stands out to us.