Animals do everything from dance to sing to try to secure a mate; a young female gorilla, flamingos, blue-footed boobies and gibbons search for partners.
New York wildlife biologist Roland Kays tracks the coywolf, a hybrid of Western coyote and Eastern wolf, found frequently on the streets of North American cities.
Specialists in South Africa follow honey badgers, renowned for their fearlessness and aggressiveness, especially while confronting large animals such as lions and buffalo.
Wildlife cameraman Colin Stafford-Johnson documents the natural history of Ireland's Shannon River, following the river through the four seasons.
Scientists, conservationists and environmentalists reveal how beavers can transform and revive landscapes.
Swarm intelligence of creatures that come together in huge numbers, from bats and bees to grunion and wildebeest.