Love is in the air all over the United States of Animals. Just a few feet from Highway 1 on the California coast, it's the ultimate prizefight for elephant seals. Meanwhile, Operation Migration is winding down after a flock of whooping cranes follow their "mom" to St. Marks, Florida. And it's a real fish-out-of-water story when grunions swarm the beaches of California.

Every March, the Platte River Valley in Nebraska is home to a colossal crane choir when thousands of sandhill cranes pull of the migration express to rest and refuel. Meanwhile, in Texas, a trail boss leads a cattle drive through town. And finally, witness a purple martin super-enthusiast who owns the world's largest purple martin apartment complex – with over 1,200 rooms!

Hit the beach with the blue bloods of the sea - horseshoe crabs. Then duck into the danger zone with some lethal birds in Tucson and soar with Monarch butterflies on the California coast. Finally, jump aboard a swamp buggy in the Everglades in search of a ghost cat…the Florida panther.