Beak deformity in a Budgerigar. Note how the lower beak appears short and heavily deformed, while the upper beak looks fragile and chipped. One of the most common causes of this type of deformity is infection with circovirus, the etiological agent of Beak and Feather Disease.







  Portuguese	  English 



Copyright © 2001 by MC Peleteiro. M Pinho & JS Orvalho

design by R Noiva