A "big beak bird" typically refers to a bird species with a notably large or prominent beak. Examples include:

1. **Hornbill** - Known for their large, curved beaks that can be quite colorful and often have a casque on top.
2. **Pelican** - Features a long, large beak with a distinctive pouch used for catching fish.
3. **Toucan** - Recognized for its enormous, brightly colored beak that is often nearly half the length of its body.

These birds use their large beaks for various purposes like foraging, feeding, or attracting mates.