Birds
- Body covering: Feathers
- Wings: Flapping
- Flight control: Musculoskeletal system
- Mobility: Can land, perch, and walk on the ground
- Reproduction: Lay eggs
- Lifestyle: Natural, wild animals
- Habitat: Varied, including forests, grasslands, wetlands, and oceans
- Diet: Varies depending on species (e.g., insects, seeds, fruits, fish)
- Size: Small to large (smallest: bee hummingbird at 2.2 inches; largest: ostrich at 9 feet)
- Weight: Light (smallest: bee hummingbird at 0.05 ounces; largest: ostrich at 345 pounds)
- Lifespan: Varies depending on species (e.g., hummingbirds: 2-5 years; parrots: 20-50 years; eagles: 30-40 years)
Aeroplanes
- Body covering: Metal, composite materials, or other artificial materials
- Wings: Fixed and aerodynamic
- Flight control: Mechanical systems (e.g., ailerons, elevators, rudders)
- Mobility: Cannot land or walk on the ground without assistance
- Reproduction: Manufactured in factories
- Lifestyle: Artificial, designed for transportation and other purposes
- Habitat: Airports, airfields, and the sky
- Diet: Fuel (e.g., kerosene, jet fuel)
- Size: Small to large (smallest: single-engine aircraft; largest: commercial airliners like the Boeing 747)
- Weight: Heavy (smallest: single-engine aircraft at 1,000 pounds; largest: Boeing 747 at 447,000 pounds)
- Lifespan: Designed with a specific service lifespan, typically several decades