Birds (S03E18)
S03E18
Researchers theorize that birds originated from reptiles. While birds possess backbones and reproduce by laying eggs, they have a distinctive characteristic that distinguishes them from all other creatures: feathers. These feathers are composed of keratin, the same protein found in human hair and nails. The combination of feathers, lightweight skeletal structures, robust wings, and strong cardiovascular systems enables birds to soar through the skies.
Show
Beast Tamer
Episode
S03E18
Air Date
Oct 13, 1995
Season 3 Episodes
S03E01
Planets & Moons
S03E02
Pressure
S03E03
Plants
S03E04
Rocks & Soil
S03E05
Energy
S03E06
Evolution
S03E07
Water Cycle
S03E08
Friction
S03E09
Germs
S03E10
Climates
S03E11
Waves
S03E12
Ocean Life
S03E13
Mammals
S03E14
Spinning Things
S03E15
Fish
S03E16
Human Transportation
S03E17
Wetlands
S03E18
Birds
S03E19
Populations
S03E20
Animal Locomotion