A relative of the hawk, the secretary bird is the only bird of prey who does more walking than flying, up to 20 miles a day. With very large, broad wings, secretary birds are also strong fliers and use thermal air currents to rise and soar. When hunting, they stamp on the ground to flush out small animals, then run in a zigzag pattern, flapping their wings to confuse their prey.
Orange-and-black wings fill the sky as NOVA charts one of nature’s most remarkable phenomena: the epic migration of monarch butterflies across North America. NOVA’s filmmakers followed monarchs on the wing throughout their extraordinary odyssey.