An intestinal disease in pigeons (Columba livia) from the Canary Islan
ds characterized by diarrhea and body weight loss is described. Intest
inal cryptosporidiosis was identified in three young pigeons. Cryptosp
oridia were associated with hyperplasia of the intestinal crypts and m
oderate inflammatory infiltration in lamina propria. This is the first
report of cryptosporidiosis in pigeons.