What classifies a bird?
Understand the Problem
The question is asking about the criteria or characteristics that define a bird, which includes its biological classification and distinguishing features.
Answer
Feathers, hard-shelled eggs, and hollow bones.
The final answer is that birds are classified by having feathers, laying hard-shelled eggs, and having hollow bones.
Answer for screen readers
The final answer is that birds are classified by having feathers, laying hard-shelled eggs, and having hollow bones.
More Information
Birds are also warm-blooded vertebrates and have toothless beaked jaws.
Tips
Make sure to include all three key characteristics: feathers, hard-shelled eggs, and hollow bones. Omitting one will result in an incomplete classification.
Sources
- What Makes a Bird a Bird? - Avian Report - avianreport.com
- Bird - Wikipedia - en.wikipedia.org
- Birds | Classification, Order & Species Names - Lesson - Study.com - study.com
Thank you for voting!
