1. Kingdom Animalia Phylum Chordata Class Aves “Birds”

2. Kingdom Animalia Kingdom Animalia Phylum Chordata Phylum Chordata Subpylum Vertebrata Subpylum Vertebrata Class Aves Class Aves

3. Origin and Evolution Archaeopteryx Archaeopteryx Reptile or bird? Reptile or bird?

4. Feathers Provide lift Provide lift Conserve body heat Conserve body heat Streamline body Streamline body Attract mates Attract mates

5. Characteristics of Birds Bones thin and hollow Bones thin and hollow

6. Characteristics of Birds 4 chambered heart 4 chambered heart A Chicken's HeartA Human's Heart Bird Heart Human Heart http://www1.teachertube.com/viewVideo.php?v ideo_id=49140

7. Characteristics of Birds Furculum Furculum Fused collar bone aiding Fused collar bone aiding in flight Keeled sternum Keeled sternum

8. Reproductive Systems Female has only one ovary Female has only one ovary Males Males testes→sperm→vas deferens→cloaca testes→sperm→vas deferens→cloaca

9. Feathers DownFlight Contour

10. Digestive and Excretory Systems Crop and Gizzard Crop and Gizzard

11. Respiratory System Highly efficient to meet demands of the high metabolic rate Highly efficient to meet demands of the high metabolic rate

12. Brain Large Large Good color vision Good color vision Good hearing Good hearing