Piping plover chicks have soft, fluffy feathers called "down."
Cheetahs have hard pads on their feet that grip the ground as they run.
California condors are the largest birds in North America.
Great hammerhead sharks migrate to cooler water for the summer.
Grey-headed flying foxes eat flowers, nectar, and fruit.
Some monarch butterflies migrate more than 3,000 miles to Mexico.