Raw data belonging to: J. G. Lynton-Jenkins, A. F. Russell, J. Chaves, C. Bonneaud, 2021. Avian disease surveillance on the island of San Cristóbal, Galápagos. Ecology and Evolution. Explanation of headers: Column Entry Value Unit Explanatation Remark A Species Categorical - Bird species (Mymag = Myiarchus magnirostris, Yewa = Setophaga petechia aureola, Parv = Camarhynchus parvulus, Fuli = Geospiza fuliginosa, Fort = Geospiza fortis, Fusc = Certhidea fusca, Scan = Geospiza scandens, Mock = Mimus melanotis, Pall = Camarhynchus pallidus, Ani = Crotophaga ani, Mela = Coccyzus melacoryphus) B Site Categorical - Specific site on San Cristobal island from which the bird was captured C SiteClass Categorical - Habitat classification of the capture site (High = a location in the highlands, Rural = a lowland rural location, Urban = a lowland urban location) Locations provided in manuscript. D Date DD/MM/YYYY - Date individual was captured and pox condition scored. E Sex Categorical - F Tarsus Numerical mm Individual tarsus length measured on capture G Wing Numerical mm Individual wing length measured on capture H Mass Numerical g Weight of the bird obtained on capture I PoxA 0-1 - Pox infection status of individuals with active pox lesions (0=no; 1=yes) J PoxP 0-1 - Pox infection status of individuals with previous pox lesions (0=no; 1=yes) Evidence of scaring likely atributable to pox e.g. missing digits, healed growths. K PoxT 0-1 - Pox infection status of individuals with any pox lesions, active or previous (0=no; 1=yes)