Kingdom AnimaliaKingdom AnimaliaPhylum ChordataPhylum Chordata

Class AvesClass Aves““Birds”Birds”

Class AvesClass Aves Kingdom AnimaliaKingdom Animalia Phylum ChordataPhylum Chordata Subpylum VertebrataSubpylum Vertebrata Class AvesClass Aves

Origin and EvolutionOrigin and Evolution ArchaeopteryxArchaeopteryx

Reptile or bird?Reptile or bird?

FeathersFeathers Provide liftProvide lift Conserve body Conserve body

heatheat Streamline bodyStreamline body Attract matesAttract mates

Characteristics of BirdsCharacteristics of Birds Bones thin and Bones thin and

hollowhollow

Characteristics of BirdsCharacteristics of Birds 4 chambered heart4 chambered heart

                                                 

      

                                                 

      

A Chicken's Heart A Human's Heart Bird Heart

Bird Heart Human Heart

http://www1.teachertube.com/viewVideo.php?video_id=49140

Characteristics of BirdsCharacteristics of Birds FurculumFurculum

Fused collar bone Fused collar bone aiding aiding

in flightin flight Keeled sternumKeeled sternum

Reproductive SystemsReproductive Systems Female has only one ovaryFemale has only one ovary MalesMales

testes→sperm→vas deferens→cloacatestes→sperm→vas deferens→cloaca

FeathersFeathersDownDown FlightFlight

ContourContour

Digestive and Excretory Digestive and Excretory SystemsSystems

Crop and GizzardCrop and Gizzard

Respiratory SystemRespiratory System Highly efficient to Highly efficient to

meet demands of meet demands of the high metabolic the high metabolic raterate

BrainBrain LargeLarge Good color visionGood color vision Good hearingGood hearing