Question

why do ducks have holes in their beaks? what is their purpose ?

Answer 1

Answer:

Just inside the beak are small, tooth-like notches called lamellae. These fine structures help ducks filter out water, mud and other items the duck doesn't want to eat. The lamellae remove the undesirables from the mouth, leaving only the intended food. ... The lamellae also helps a duck to grip food.

I hope this helps you

Answer 2

Answer:

The holes in there beaks are nostrils.