The virtual galleries on Ray Wilson's homepage are systematically arranged according to taxonomic groups. The bird photographs are divided in passerines (perching birds, also called songbirds) and non-passerines and further into the many different families. For example, if I would like to look at photographs of the House sparrow, I surf from the passerines to the Passeridae (the bird family the house sparrow belongs to) and there I will find the well-known Passer domesticus (and four other species of sparrow). On my recent visit on Ray Wilson Bird & Wildlife Photography I was particularly impressed by the hummingbirds from Ecuador. The photograph below is a particularly well-accomplished capture of a Booted Racquet-tail. If you want to delve further into hummingbirds, there are 18 additional species (under Non-passerine Birds and in the family called Trochilidae).
I hope you will have a look and enjoy his photographs!