A bird’s outer beak is made of keratin and grows continuously much like our fingernails. Birds generally wear down their beak naturally and do not usually require regular beak trimming. However, there are some cases where birds develop an abnormal beak, or their beak becomes overgrown.
If not corrected, an overgrown beak can prevent birds from performing daily tasks such as climbing, preening, and eating, leading to malnutrition and other health problems.