Known scientifically as Ardea humbloti, the Madagascar heron was added to the red list in 2016 following a review of the population’s size at the time. A team assessed the species for inclusion in the ...

even between species of similar size. For example, the Dwarf Bittern (a heron) is 10 to 12 inches long, whereas the Demoiselle Crane is 35 inches long. In terms of wingspan, the Whooping Crane ...