I did finish it but after a couple of uses realized I wasn't satisfied with the results. The strap wasn't padded enough and the way it attached caused weird twisting. I thought I could fix it by deconstructing parts of the bag. Life intervened and this bird bag languished in my pile of sewing stuff.
Now, a mere six months later, I finally picked this project back up. I spent some quality time with my seam ripper, cut out a new strap, sewed some, spent more time with the seam ripper, and so forth. Now, I'm quite proud of the results.
Here it is back in July. It looks about the same now but the strap is bulkier and attached in a different place.
Now I just need a reason to use it!