The traditional name I know is also Birds in the Air, the modern name I know is Shaded 4-patch. If you search on that there is at least one chart for purchase that has different dimensions, I didn't quickly find a free resource.
I pulled out my copy of the book, Designing Quilts, The Value of Value by Suzanne Tessier Hammond. The entire book is devoted to the block and different layouts -- but there was no sizing chart in there either! Still, is a great book if you happen to find it at the guild table or used book store:
https://www.amazon.com/Designing-Qui.../dp/1564770648