This week's פרשה contains one of my דקדוק pet peeves. The mitzvah of sending away the mother bird is very commonly referred to as "Shiluach haKan." However, the word is "kan" in the pasuk only because of סמיכות. When referring to the mitzvah, the proper term should be "Shiluach HaKein."
However, I was very intrigued to find this point actually discussed in this article by R' Zvi Goldberg of the Star-K. See footnote #1 (it's linked at the very beginning.)
