In Namibia, one male dominates each flock. He defends his leadership when challenged by another. A young male attracts females with a booming sound made in his throat. Females inspect him and challenge his endurance.
Zebra Harem (05:34)
Zebras in the Serengeti travel in large herds to protect themselves from hyenas. A big herd means more mares to protect from outside stallions. The leader successfully fights off other males.
Termite Queen (07:04)
A queen has an army of obedient subjects and a king that mates with her frequently. She lays eggs 24 hours per day for 25 years. Workers create perfect conditions for egg development, and she uses chemical signals to direct her colony.
Gray Kangaroos (05:06)
On the meadows of Southern Australia, males fight for access to females; the biggest usually wins. Females can conceive at any time; she determines when mating is allowed.
Nursery Web Spider (06:18)
A male stalks prey. Once he catches it, he wraps it in silk and starts looking for a female to present it as a gift. A potential mate accepts the prey and eats it before the male transfers his sperm.
In northern Finland, groups of males gather to display neck feathers and impress potential mates. When a flock of females arrives, some males find a mate while others fight.
Large herds on the open savannas of Kenya attract predators. A male leaves his post to find a mate and he must battle his own species. He demonstrates his physical fitness to attract females.
Ostrich Chicks (01:41)
Ostrich eggs have hatched. Their parents must continue to feed and protect them.
Credits: Grasslands: In Plain Sight (00:34)
Credits: Grasslands: In Plain Sight
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