That is made with the Wild Flying Geese block, also known as the Rambler block. You can find the free block on the internet. This one:
http://www.quilterscache.com/W/WildGooseChaseBlock.html,
https://www.freequilt.com/rambler-quilt.html,
https://nancycabotsewalong.blogspot....ilt-block.html There are others but you have to do a search. Good Luck