Here is a list of nature reference books useful for people living in or visiting Spain.
If you have been looking for books about birds, snakes, spiders, butterflies, for use in Almería or Spain and Mediterranean Europe, here they are:
Amazon links are included for your convenience.
RSPB Birds of Britain & Europe
Snakes, Reptiles and Lizards:
Field Guide to the Amphibians and Reptiles of Britain and Europe
Wild Flowers of the Mediterranean: A Complete Guide to the Islands and Coastal Regions
Collins Field Guide – Butterflies of Britain and Europe
Insects of Britain and Western Europe: 3rd Edition (Field Guide)
Gardening in Spain:
Garden Plants for Mediterranean Climates
I hope that you found this list useful. If you know of other books which would be even better, please do let me know.