Class Aves and Reptilia

Chapter 9

Class Aves

• Bony endoskeleton

• Feathers

• Beak

• Endothermic

• Hollow bones

• Wings for maneuverability

• Eat- scavengers, filter feeders, invertebrates, and fish.

• Reproduction- amniotic egg.

• Habitats- all.

• ~9,700 species.

• Examples- Phalacrocorax, Larus, and Pelecanus.

Hollow Bones with Struts

Feathers

Beak Shape

Feeding StrategiesSurface

plunging

Surface

plunging

Aerial pursuit

Aerial pursuit

Dipping

Pattering

Pursuit diving

with wings

Pursuit diving

with feet Pursuit plunging

Emperor Penguins

Archaeopteryx

Class Reptilia

• Bony endoskeleton

• Scaly skin

• Ectothermic

• Well developed lungs

• Limbs for support on land

• Eat- algae, invertebrates, and fish.

• Reproduction- internal fertilization; egg with shell, amniotic egg.

• Habitats- pelagic and near shore.

• ~7,000 species.

• Examples- Dermochelys and Chelonia.

Reptile Skin

Reptile Eggs

Turtle Necks

Turtle Skeleton

Natal Homing Hypothesis

Copyright ©1997 by the National Academy of Sciences

FitzSimmons, Nancy N. et al. (1997) Proc. Natl. Acad. Sci. USA 94, 8912-8917