International Day for Biological Diversity

 The Florida grasshopper sparrow is an endangered subspecies of grasshopper sparrow native to the dry prairies of south-central Florida. The Florida grasshopper sparrow is one of four subspecies of grasshopper sparrows in North America , and is perhaps the most endangered.The Florida grasshopper sparrow is protected by the U.S. Migratory Bird Treaty Act . It is also protected as an Endangered species by the Federal Endangered Species Act and as a Federally-designated Endangered species by Florida's Endangered and Threatened Species Rule. A taxon is Extinct (EX) when there is no reasonable doubt that the last individual has died. A taxon is presumed Extinct when exhaustive surveys in known and/or expected habitat, at appropriate times (diurnal, seasonal, annual), throughout its historic range have failed to record an individual.

The blue whale is listed as endangered throughout its range under the ESA and is thus considered depleted throughout its range under the MMPA. Internationally, blue whales received complete legal protection from commercial whaling in 1966 under the International Convention for the Regulation of Whaling. To address this, the Red List Index (RLI) has been developed, which shows trends in the status of groups of species based only on genuine improvements or deteriorations in status of sufficient magnitude to qualify species for listing in more threatened or less threatened Red List Categories. Species Categorized as Extinct (EX)

The population of black rhinos declined dramatically in the 20th century at the hands of European hunters and settlers. Between 1960 and 1995, black rhino numbers dropped by a sobering 98%, to less than 2,500 individuals. Since then, the species has made a tremendous comeback from the brink of extinction. Most species that move between categories on The IUCN Red List (see the section Reasons for Changing Category ) do so because of improved knowledge or revised taxonomy. It is therefore impossible to determine any meaningful trends in the status of biodiversity simply by looking at overall changes in numbers of threatened species between updates.The Red List Index (RLI) .  A Categories listed as Extinct (EX) . 

Once common throughout Africa and Asia, elephant populations have experienced significant declines over the last century. The greatest threat to African forest elephants is poaching for the illegal ivory trade , while Asian elephant populations are most at risk from habitat loss and resulting human-elephant conflict. Species categorized as Extinct (EX)  

There is a sub-species of Hector's dolphin known as Maui's dolphin that is critically endangered and fall into extinction , the experts estimate that the population of only 55 are still alive.   The largest threat to hector's dolphin and both subspecies is bycatch in commercial and recreational gillnets and trawls. Habitat-related threats , disease, and tourism may also negatively impact the dolphins.   Species categorized as Extinct (EX)