In the details of this finely executed piece, an overlay of splattered white pigment, called "gofun", is applied by hand after the printing of the blocks, to represent snow shaken off the branch on which the kingfisher sits. Gofun is made from the shells of oysters and clams, whose calcified particles make up a smooth, matte paint when mixed with glue. It was originally created to replace lead-based white paint, which would often turn black when mixed with vermillion or left in hot or humid conditions.
According to Merritt (and likely sourced from the ukiyo-e scholar Fujikake Shizuya, 1938), Narazaki Eisho used the art names Fuyo from 1916-1922, and Eisho from 1922-1936, which would suggest that this is a pre-earthquake (before September 1, 1923) print, a possibility which can not be ruled out considering the scarcity of works signed Fuyo.