What is the name of this quilt block?
 

I'm pretty sure this is a traditional block but I don't know the name. Help?

Attachment 646703

I've seen it called "Bird in the Air". (It may have other names, too.) Here is a video that calls it by that name and shows a neat way to make it that produces good accuracy for a lot of people. (The units are made a little large and trimmed down.)

If you leave out the line between units 1 and 4 of your image, it's know by a variety of names such as "Shaded Four Patch", Magic Square", "Hidden Square", "Mary's Triangles", "Square and Three Triangles" and "Jewel Box".

Thank you! I forgot about Bird In The Air, I wouldn't have remembered that. And I learned some new block names today. Thanks again :)

It's Cat's Cradle if you leave off the four corner triangles around the center.