SCIENCE- VERTEBRATE ANIMALS-BIRDS

SUMMARY:

THEY ARE VERTEBRATES

THEY ARE OVIPAROUS. FERTILIZATION TAKES PLACE INSIDE THE BODY

THEY BREATH THROUGH THEIR LUNGS

                                      

                                                      

THEY HAVE BEAK, LEGS, FEATHERS, WINGS AND THEIR BODIES ARE COVERED BY FEATHERS

                                                          

THEIR BODY TEMPERATURE IS CONSTANT