Final answer:
Aquatic birds in the aquatic biome have specially designed beaks to filter food from water.
Step-by-step explanation:
The biome that most commonly contains birds with specially designed beaks to filter food from water is the aquatic biome. Aquatic birds, such as ducks, geese, and herons, have beaks that are adapted to catch and filter fish, small invertebrates, and water plants from the water.
For example, the bill of a duck is broad and flat, allowing it to filter out water and retain food particles. Herons, on the other hand, have long, sharp beaks that they use to spear fish and other small prey.
These adaptations enable aquatic birds to efficiently obtain their food in their watery habitats.