Birds and Mammals

wings
feathers
beaks & light bones
lay eggs

• traits of birds
• traits of reptiles
• traits of fish

Birds have wings, feathers and 

• beaks
• teeth
• moist skin

Birds lay eggs, have beaks and have 

• fur
• wings and feathers
• milk

Birds bones are

• heavy
• leathery
• light

hair and fur
feed babies milk
most babies are born alive

• traits of birds
• traits of mammals
• traits of reptiles

Mammals have hair and fur
feed babies milk, and 
most babies are born ______

• in eggs
• alive

Mammals have hair and fur and
feed babies _____

• eggs
• worms
• milk

Mammals have hair and fur and
feed babies _____

• eggs
• worms
• milk

keep them warm (incubate them by sitting on eggs), feed them
and protect them

• how birds care for young
• how mammals care for young

Birds care for their young by keeping them warm. This is called 

• heating
• cooling
• incubating