Endangered Species Polar Bear Conservation Bird Populations Penguin Conservation Turtle Species Natural History Lion Conservation Lion Population Dynamics Threatened Species Bonobos Diversity Species Interaction Bats Northern Bald Ibis Habitat Studies Vultures Amphibian Research Species Discovery Bird Conservation Polar Bears Species Distribution Polar Bear Research Seabirds Sir David Attenborough Grizzly Bears Migration Studies Ivory Trade Koala Conservation Penguin Studies Adaptation to Climate Change Avian Behavior Gila Monster Species Recovery Bearded Vultures Specimen Collection Polar Ecosystems Biodiversity Marine Ecosystems Native Species Marine Mammals David Attenborough Predator-Prey Dynamics Research Studies Koalas Coastal Marten Disease Impact Galápagos Islands Cheetah Species Species Preservation Population Dynamics Human Impact on Nature Camera Trapping Impact of Media Habitat Preservation Nature Education Birds Hedgehogs Endemic Species Monitoring Programs Large Carnivores
The rankings come from volunteer feeder counts and a percent-of-sites method that produce a short-term presence snapshot rather than long-term trend data.