White-tailed eagle at . However, this is dwarfed by the largest avian prey credited to a white-tailed eagle, an adult male great bustard ("Otis tarda"), which weighed an estimated (which, much like exceptionally large fish taken, must have been consumed in the killing spot or subsequently dismantled as too large to fly with). Among the land birds taken, more than 20 passerines are included in the prey spectrum but most are obviously too small and swift to be anything but incidental prey. The smallest avian prey known for white-tailed eagles was a great tit ("Parus major"), a species which weighs on average.
Porphyria cutanea tarda Porphyria cutanea tarda Porphyria cutanea tarda (PCT) is the most common subtype of porphyria. The disease is named because it is a porphyria that often presents with skin manifestations later in life. The disorder results from low levels of the enzyme responsible for the fifth step in heme production. Heme is a vital molecule for all of the body's organs. It is a component of hemoglobin, the molecule that carries oxygen in the blood. Hepatoerythropoietic porphyria has been described as a homozygous form of porphyria cutanea tarda, although it can also be caused if two different mutations occur at the