Yes,sometimes.
They sharpen their teeth on a piece of cuttlefish bone.
With their beaks....
no it's not
No, there beaks grow a little sharp, (ex.) your toe nails grows sharp.
From the ground they suck the water with their beaks.
dried cuttlefish is good for pet birds to sharpen their beaks on and nibble at.
Birds, chickens, and ducks are one of the animals that use beak in eating.
No.
For their meat and eggs, and also some are for their down or beaks/claws.
To prevent pecking in overcrowded conditions.
Their mouths (beaks) 'Peck' yeah.. they use their beaks for that. (The Yellow-Orange thing on their face) and their claws (which is on their feet) 'scratch'
inside one of the chicken's beaks. it is very small