Guess the Cover of American Laboratory—March 2013

Correctly identify this month’s cover image and be entered to win a $10 Amazon gift card (one entry per person; you must be 18 years of age to be eligible. See contest rules at

Hint: These create color by diffracting and scattering light. Stretch your imagination (and your wingspan) and see if you can guess this month’s cover image.

What do you think it is? Enter by leaving your answer in the comments section below. Stay tuned for the answer and for next month’s cover image!