User blog comment:Wildoneshelper/Points to note/@comment-26388711-20170629051212

I did create redirects based on plurals for conciseness. Not all plurals use the -s or -es suffix. Some plurals are in a sense, irregular: you have to remember them, but fortunately it makes it more distinctive.

Regular plurals Most of them can leave out the plural marker, while some follow a regular alternative pattern of capitalization.
 * Typical case: Plurals have -s appended, or -es for phonetic causes
 * -f case: f or fe becomes -ves for phonetic causes.
 * -ix case: ix becoming ices is conventional, but optional.
 * Latin -us case: -us becoming -i is conventional. The regular case is also acceptable.

Irregular plurals A few words may feature a distinctive pattern of pluralization, and others have unique pluralization to the word becomes distinctive. These should have separate plural redirect when possible.