As if one blog isn’t hard enough to maintain, I’ve gone out and done it now—started a new blog devoted exclusively to thoroughbred horse racing's great fillies and mares, called Fillies First. Check it out, and add it to your required reading. I promise it will be worthwhile.
My first project available on there is a spreadsheet recording the names and ages of every filly and mare who won or placed (second or third) in a G1, G2 or G3 stakes race around the world just this year—as of this post, there are 158. Any additions and corrections would be much appreciated as I’ll be updating it regularly.