It was reclassified to and was designated the type species of the new genus Ciconia by French zoologist Mathurin Jacques Brisson in The only vocal sound adult birds generate is a weak barely audible hiss; however, young birds can generate a harsh hiss, various cheeping sounds, and a cat-like mew they use to beg for food. Although not many storks passed through Rossitten itself, the observatory coordinated the large-scale ringing of the species throughout Germany and elsewhere in Europe. In Western Europe the white stork remains a rare bird despite conservation efforts. The males arrive earlier in the season and choose the nests.
White storks no longer nest in many countries, and the current strongholds of the western population are in Portugal, Spain, Ukraine and Poland. Parasitic mites do not occur, perhaps being controlled by the predatory species. It avoids areas overgrown with tall grass and shrubs. The typical storks include the white stork and six other extant species,  which are characterised by straight pointed beaks and mainly black and white plumage. The display is used as a greeting between birds, post coitus, and also as a threat display. When seen at a distance in flight, the white stork can be confused with several other species with similar underwing patterns, such as the yellow-billed stork , great white pelican and Egyptian vulture. The males arrive earlier in the season and choose the nests. It flies with its neck stretched forward and with its long legs extended well beyond the end of its short tail. Less commonly, they also eat bird eggs and young birds, fish, molluscs, crustaceans and scorpions. There were pairs breeding in Armenia and around pairs in the Netherlands in ,  and few pairs also breed in South Africa, typically recent colonists from within the normal wintering population. Systematic research into migration of the white stork began with German ornithologist Johannes Thienemann who commenced bird ringing studies in at the Rossitten Bird Observatory , on the Curonian Spit in what was then East Prussia. The word is related to the Old High German storah, "stork", and similar words in many other European languages, all of which are descended from the Germanic sturko-z. The word stork is derived from the Old English word storc, and appeared in the 10th-century works the Erfurt Glossary, where the word is equated with Ciconia, and Aelfric's Homilies. Young storks adopt adult plumage by their second summer. The plan is intended to address key issues such as species and habitat conservation, management of human activities, research, education, and implementation. Larger nests are associated with greater numbers of young successfully fledged, and appear to be sought after. The other species found included Cathaemasia hians , Echinochasmus spinulosus , Echinostoma revolutum , Echinostoma sudanense , Duboisia syriaca , Apharyngostrigea cornu , Capillaria sp. The 3rd century Roman writer Aelian citing the authority of Alexander of Myndus noted in his De natura animalium book 3, chapter 23 that aged storks flew away to oceanic islands where they were transformed into humans as a reward for their piety towards their parents. The Fox and the Stork ,. Used in a variety of social interactions, bill-clattering generally grows louder the longer it lasts, and takes on distinctive rhythms depending on the situation—for example, slower during copulation and briefer when given as an alarm call. Older chicks reach into the mouths of parents to obtain food. White storks rely on the uplift of air thermals to soar and glide the long distances of their annual migrations between Europe and Sub-Saharan Africa. These feed on the eggs and larvae of insects and on nematodes , which are abundant in the nest litter. Common food items include insects primarily beetles, grasshoppers, locusts and crickets , earthworms, reptiles, amphibians, particularly frog species such as the edible frog Pelophylax kl. Beaks turn red starting at the base.
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