Of course they're not! Can you imagine how strange birds would look if they had their skeletons on the outside of their bodies, like butterflies do? Hmmm ... maybe I should try drawing that. Anyway, my fairy pinback button set is featured in another fun EtsyTwitter Team treasury, chosen by prettycheap. *floats* Go see it before it flutters away on Friday, May 1st at 9:40pm.
PS: If the treasury expires before you're able to view it and it's life or death that you see a featured item, add ".etsy.com" after the username (they're on the second line under the picture, left of the price - and if they're hard to read, right click on the image so you can view it full size) and you'll be magically whisked away to their shop. For example, you'd type my username, "aquariann," then ".etsy.com" and abra ca dabra: aquariann.etsy.com