To begin construction, she bites the petals off of flowers and flies each petal — one by one — back to the nest, a peanut-sized burrow in the ground.
She then shapes the multi-colored petals into a cocoon-like structure, laying one petal on top of the other and occasionally using some nectar as glue. When the outer petal casing is complete, she reinforces the inside with a paper-thin layer of mud, and then another layer of petals, so both the outside and inside are wallpapered — a potpourri of purple, pink and yellow.
See more pictures at NPR. Link -via Nag on the Lake
(image credit: Jerome Rozen/American Museum of Natural History)