Qui ci sono le immagini del becco :

http://imageshack.com/a/img922/7071/h3AmCG.jpg
http://imageshack.com/a/img922/6121/NO0lWu.jpg
http://imageshack.com/a/img921/5273/DpLfuU.jpg
http://imageshack.com/a/img922/804/nJSBXW.jpg
http://imageshack.com/a/img921/9672/EqLfdv.jpg
http://imageshack.com/a/img923/4066/YNIACZ.jpg
http://imageshack.com/a/img921/9329/fhA3hK.jpg