Toward the bottom of this page is a PDF link to different sizes of paper gridded HST. The 1 inch one is what I used to make my Birds in the Air. These files are good to save in a folder under quilt patterns as they are used in other blocks as well. They are from Block Central but I couldn't find them on that site. Unfortunately, any odd size squares have to be drafted.
http://www.bellaonline.org/articles/art10208.asp