This blog is a diary of Princeton's nature since 2006. For finding older posts about a particular subject or time of year, there are labels and an archive listed on the right (if using a computer). If it's August, go to the archives, click on a year and then on August to find out what was encountered in late summer that year.
You can also try the search box, which on a computer screen should be in the upper lefthand corner. Type a word in, hit return, and all the posts with that word will show up below. This works with plant names like spicebush or place names like battlefield, mountain (for Mountain Lakes), herrontown (for Herrontown Woods), ecolab, etc.