The birds are under a layer of serviette tissue, with molding paste pushed through letter stencils.
I just cannot get enough of stencils - they come in so many patterns, and you can make them yourself out of plastic and a burning tool. These letter stencils are heavy paper ones from the Office supply store. Lots of spraying with mists done here as well. I am drawn to those as well...sigh.
Please click on image for an enlarged view