The ostrich is a bird known for having large eyes relative to the size of its brain.

Understanding the Riddle
The phrase "my eye is bigger than my brain" suggests a bird with relatively large eyes compared to its brain size. This riddle is a playful way of highlighting a unique characteristic of certain birds.
Option Analysis
- Owl: Known for their exceptional night vision, owls do have large eyes, but their brain size is proportionate to their body, making them intelligent hunters.
- Ostrich: The ostrich is the largest bird in the world and has very large eyes. In fact, its eyes are among the largest of any land animal, which is an adaptation to see predators from afar. Its brain, however, is smaller relative to its body size.
- Emu: The emu has large eyes but not as disproportionately large compared to its brain as the ostrich.
- Kiwi: Kiwis have small eyes and a relatively larger brain for their size, which helps them navigate their nocturnal environment.
Conclusion: Why Ostrich?
The correct answer is option 'B' (Ostrich) because:
- Size Comparison: The ostrich's eyes are indeed larger than its brain when compared proportionately to its body size.
- Adaptation: This eye size helps the ostrich spot danger from a distance, which is crucial for survival in the wild.
Thus, the phrase captures the essence of the ostrich's unique anatomical feature, making it the best fit for the riddle.