Are you sewing along with the Blockheads mystery sampler?
This is the block for week 19 called "Night Flight". If you're sewing this block be sure to use the instructions on page 2 if you are doing traditional piecing (page 1 is for "layered patchwork" technique). We haven't had many flying geese in the blocks so far, so it was nice to sew a few of those.
Here are the blocks on the design wall in no particular order. My block collection is missing the #16 flag block since I haven't figured that one out yet.
Hop over to Moda to see what block #20 is.