Senegal, 1974 - Crowned Crane

The crowned crane (Balearica regulorum) is a bird of Africa’s wetlands and grasslands, recognized by its golden crown of stiff feathers. Unlike most cranes, it roosts in trees thanks to its long hind toe.

Australia, 1981 - Thylacine

The thylacine (Thylacinus cynocephalus), also known as the Tasmanian tiger, once lived across Australia and New Guinea but survived into modern times only in Tasmania. This 1981 stamp placed it in an “Endangered Species” series, even though the last known thylacine had died in 1936. Hopes lingered for decades, fueled by unconfirmed sightings, until the species was officially declared extinct in 1982.