Great bustard Army training area. Here the lack of public access allows them the freedom needed as a large ground-nesting bird. It is classified by the IUCN as "vulnerable". The great bustard was classified with its scientific name in 1758 by Carl Linnaeus, though the species was referred to as "avis tarda" in the much older writings of Pliny the Elder, and hence its names in English (from Old French "bistarda") and some other languages: "abetarda" (pt), "avetarda" (gl), "avutarda" (es). "Otis" is an Old Greek name for "bustard". The specific name, "tarda", is Latin for "slow" and "deliberate", which is apt
Porphyria cutanea tarda the body. Certain mutations in the "HFE" gene cause hemochromatosis (an iron overload disorder). People who have these mutations are also at an increased risk of developing porphyria cutanea tarda. In the 20% of cases where porphyria cutanea tarda is inherited, it is inherited in an autosomal dominant pattern, which means one copy of the altered gene is sufficient to decrease enzyme activity and cause the signs and symptoms of the disorder. While inherited deficiencies in uroporphyrinogen decarboxylase often lead to the development of PCT, there are a number of risk factors that can both cause and exacerbate the symptoms