Answer:
I. Birds and their shapes and sizes
A.Ostrich-largest bird,weigth 150 kg
B.Bee-smallest hummingbird,weigth 1.8 grams
C.
.II. Birds and their wings
A.Birds have hallow bones for lightness in the air
and strong breasts for their wings.
B.Large birds can flap their wings slowly and float on air currents.
C.Small birds have to flap their wings harder to stay in the air.
.III. Birds as parents
А.Most are busy parents who work hard to rear thier young.
B.Some lay their eggs in other birds,nests to foster parents to rear.
C.Other birds bury their eggs in warm places and leave them.
