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Hercinia is a legendary bird with glowing feathers that inhabited the Hercynian Forest of ancient Germany.
The hercinia is depicted in Medieval bestiaries [1] and was recorded in the 1st century by Pliny the Elder, who wrote, “In the Hercynian Forest, in Germany, we hear of a singular kind of bird, the feathers of which shine at night like fire.” [2] Writing in the 7th century, Isidore of Seville notes, "Their feathers sparkle so much in the shade that, however dark the night is with thick shadows, these feathers, when placed on the ground, give off light that helps to mark the way, and the sign of the glittering feathers makes clear the direction of the path." [3] [4]
Whether or not the hercinia was a real species of luminescent bird cannot be said with any degree of certainty. It is possible that the reports of the hercinia were based on sightings of birds with iridescent feathers that reflected moonlight, a phenomenon that has been reported of a number of species of birds, including the barn owl [5] and the American bittern. [6] It is also possible that tales of the hercinia were based upon birds that carried in their feathers bioluminescent fungi or bacteria.[ citation needed ]
The legend of the glowing birds of the Hercynian forest has inspired various works of art, including Thomas Moore's poem, "A Dream of Antiquity."
Owls are birds from the order Strigiformes, which includes over 200 species of mostly solitary and nocturnal birds of prey typified by an upright stance, a large, broad head, binocular vision, binaural hearing, sharp talons, and feathers adapted for silent flight. Exceptions include the diurnal northern hawk-owl and the gregarious burrowing owl.
Barn-owls are one of the two families of owls, the other being the true owls or typical owls, Strigidae. They are medium to large owls with large heads and characteristic heart-shaped faces. They have long, strong legs with powerful talons. They also differ from the Strigidae in structural details relating in particular to the sternum and feet.
The Hercynian Forest was an ancient and dense forest that stretched across Western Central Europe, from Northeastern France to the Carpathian Mountains, including most of Southern Germany, though its boundaries are a matter of debate. It formed the northern boundary of that part of Europe known to writers of Antiquity. The ancient sources are equivocal about how far east it extended. Many agree that the Black Forest, which extended east from the Rhine valley, formed the western side of the Hercynian, except, for example, Lucius of Tongeren. According to him, it included many massifs west of the Rhine.
Tyto is a genus of birds consisting of true barn owls, grass owls and masked owls that collectively make up all the species within the subfamily Tytoninae of the barn owl family, Tytonidae.
The golden masked owl is a barn owl endemic to the island of New Britain, Papua New Guinea. It is also known as New Britain barn owl, New Britain masked owl, Bismarck owl and Bismarck masked owl.
The Itombwe owl is a species of owl in the barn owl family, Tytonidae. It is restricted to a small area in the Albertine Rift montane forests.
The African grass owl is a species of owl in the barn owl family, Tytonidae.
The ashy-faced owl is a species of bird in the barn-owl family Tytonidae. It is found on the Caribbean island of Hispaniola, on Dominica, and on several other islands of the Lesser Antilles.
The Sulawesi masked owl is a species of owl in the family Tytonidae. It is endemic to the Indonesian islands of Sulawesi, Sangihe and Peleng. It is listed by the IUCN as being of least concern.
A pard is the Greek word for the leopard, which is listed in medieval bestiaries and in Pliny the Elder's book Natural History. Over the years, there have been many different depictions of the creature including some adaptations with and without manes and some in later years with shorter tails. However, one consistent representation shows them as large felines often with spots.
In ornithology, the facial disc is the concave collection of feathers on the face of some birds—most notably owls—surrounding the eyes. The concavity of the facial disc forms a circular paraboloid that collects sound waves and directs those waves towards the owl's ears. The feathers making up this disc can be adjusted by the bird to alter the focal length of this sound collector, enabling the bird to focus at different distances and allowing it to locate prey by sound alone under snow, grass, and plant cover.
The Tasmanian masked owl is a bird in the barn owl family Tytonidae that is endemic to the island state of Tasmania, Australia. It is the largest subspecies of the Australian masked owl, the largest Tyto owl in the world, and is sometimes considered a full species. The subspecific name castanops, meaning "chestnut-faced", comes from the colouring of the facial disc. It was first described by John Gould, who wrote about it in his Handbook to the Birds of Australia as:
"…a species distinguished from all the other members of its genus by its great size and powerful form. Probably few of the Raptorial birds, with the exception of the Eagles, are more formidable or more sanguinary in disposition."
"Forests of large but thinly scattered trees, skirting plains and open districts, constitute its natural habitat. Strictly nocturnal in its habits, as night approaches it sallies forth from the hollows of the large gum-trees, and flaps slowly and noiselessly over the plains and swamps in search of its prey, which consists of rats and small quadrupeds generally."
The Andaman masked owl is a barn owl endemic to the southern Andaman Islands archipelago of India, in the Bay of Bengal, Indian Ocean. Regarded by some authors as a subspecies of the common barn owl, it is recognized by others as a species in its own right.
The New Caledonian barn owl, also referred to as Letocart's barn owl, is an extinct species of owl in the barn owl family. It was endemic to the island of New Caledonia in Melanesia in the southwestern Pacific region. It was described from Late Pleistocene to Holocene aged subfossil bones found at the Gilles Cave paleontological site on the west coast of Grande Terre. The holotype is a complete adult left femur, held by the Muséum national d'histoire naturelle in Paris. The owl was described as Tyto? letocarti, indicating uncertainty as to generic placement at the time. The specific epithet honours Yves Letocart of New Caledonia's Water and Forest Service, who was active in bird conservation and paleontological work on the island.
The Rochester Bestiary is a richly illuminated manuscript copy of a medieval bestiary, a book describing the appearance and habits of a large number of familiar and exotic animals, both real and legendary. The animals' characteristics are frequently allegorised, with the addition of a Christian moral.
The eastern barn owl is usually considered a subspecies group and together with the American barn owl group, the western barn owl group, and sometimes the Andaman masked owl make up the barn owl. The cosmopolitan barn owl is recognized by most taxonomic authorities. A few separate them into distinct species, as is done here. The eastern barn owl is native to southeastern Asia and Australasia.
The western barn owl is usually considered a subspecies group and together with the American barn owl group, the eastern barn owl group, and sometimes the Andaman masked owl make up the barn owl. The cosmopolitan barn owl is recognized by most taxonomic authorities. A few separate them into distinct species, as is done here. The western barn owl is native to Eurasia and Africa.
Most owls are nocturnal or crepuscular birds of prey. Because they hunt at night, they must rely on non-visual senses. Experiments by Roger Payne have shown that owls are sensitive to the sounds made by their prey, not the heat or the smell. In fact, the sound cues are both necessary and sufficient for localization of mice from a distant location where they are perched. For this to work, the owls must be able to accurately localize both the azimuth and the elevation of the sound source.
The American barn owl is usually considered a subspecies group and together with the western barn owl group, the eastern barn owl group, and sometimes the Andaman masked owl, make up the barn owl, cosmopolitan in range. The barn owl is recognized by most taxonomic authorities. A few separate them into distinct species, as is done here. The American barn owl is native to North and South America, and has been introduced to Hawaii.
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