Most of the prints in this image are unique state prints (there is only one of that print). They are created using a variety of printmaking techniques e.g. stencilling, polyplate (flexible polyester matrix sheets used as an alternative to traditional lithography stone), Chine-collé (bonding a delicate paper to a heavier backing paper (in the second print, top row). In this case a mulberry paper printed with the image of the bird and glued under pressure to a polyplate image of the mangroves.