This Single Deck of 52 Playing Cards features ornithologist Robert Ridgway's impressive display of colour swatches from 1886, originally used to standardise the descriptions of colour of birds.

Roomytown's design team in Bath, UK, designed each playing card individually, making use of an array of Ridgway's colour swatches. 

Size: H 4.1" x W 3.0" x D 1.2"