Heligoland Bird Observatory
Encyclopedia
The Heligoland Bird Observatory (Vogelwarte Helgoland in German
German language
German is a West Germanic language, related to and classified alongside English and Dutch. With an estimated 90 – 98 million native speakers, German is one of the world's major languages and is the most widely-spoken first language in the European Union....

), one of the world's first ornithological observatories, is operated by the Ornithologische Arbeitsgemeinschaft Helgoland e.V., a non-profit organization
Non-profit organization
Nonprofit organization is neither a legal nor technical definition but generally refers to an organization that uses surplus revenues to achieve its goals, rather than distributing them as profit or dividends...

 which was founded in 1991 to support research on the fauna of Heligoland
Heligoland
Heligoland is a small German archipelago in the North Sea.Formerly Danish and British possessions, the islands are located in the Heligoland Bight in the south-eastern corner of the North Sea...

, a small German
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

 archipelago
Archipelago
An archipelago , sometimes called an island group, is a chain or cluster of islands. The word archipelago is derived from the Greek ἄρχι- – arkhi- and πέλαγος – pélagos through the Italian arcipelago...

, comprising the islands of Heligoland and Düne, in the Heligoland Bight
Heligoland Bight
The Heligoland Bight, also known as Helgoland Bight, is a bay which forms the southern part of the German Bight, itself a bay of the North Sea, located at the mouth of the Elbe river...

 of the North Sea
North Sea
In the southwest, beyond the Straits of Dover, the North Sea becomes the English Channel connecting to the Atlantic Ocean. In the east, it connects to the Baltic Sea via the Skagerrak and Kattegat, narrow straits that separate Denmark from Norway and Sweden respectively...

. The principal research focus is on bird migration
Bird migration
Bird migration is the regular seasonal journey undertaken by many species of birds. Bird movements include those made in response to changes in food availability, habitat or weather. Sometimes, journeys are not termed "true migration" because they are irregular or in only one direction...

 through banding
Bird ringing
Bird ringing or bird banding is a technique used in the study of wild birds, by attaching a small, individually numbered, metal or plastic tag to their legs or wings, so that various aspects of the bird's life can be studied by the ability to re-find the same individual later...

 studies. Over 400 species have been recorded. OAG Helgoland produces an annual bird report.

History

Heligoland is on a major migration route for birds crossing the North Sea; for centuries they, both those on migration and those breeding there, were an important source of food for the islanders. In the early 19th century Heligoland also became a source of bird specimens for collectors and museums. Ornithologist and artist Heinrich Gätke
Heinrich Gätke
Heinrich Gätke was a German ornithologist and artist. The son of a baker, he was sent to study commerce in Berlin but became a painter. In 1837 he travelled to the island of Heligoland for the first time. From 1841 he decided to live there and from 1843 he studied birds on the island...

 first visited the island in 1837 and moved there permanently in 1841 as secretary to the British Governor. He began collecting specimens of rarities for both artistic and scientific purposes. He spent most of the next 60 years studying the birds and coined the term "Vogelwarte", producing a book ("Die Vogelwarte Helgoland") on his research in 1891, with an English translation published in 1895. The modern observatory was established in 1910 by Hugo Weigold
Hugo Weigold
Max Hugo Weigold was a German zoologist and a pioneer bird bander who established the Heligoland Bird Observatory, one of the world’s first.Weigold was born in Dresden. He studied natural sciences and geography in Jena and Leipzig...

 with a systematic trapping and banding
Bird ringing
Bird ringing or bird banding is a technique used in the study of wild birds, by attaching a small, individually numbered, metal or plastic tag to their legs or wings, so that various aspects of the bird's life can be studied by the ability to re-find the same individual later...

 program using the "Heligoland trap
Heligoland trap
A Heligoland trap is a large, building-sized, funnel-shaped, rigid structure of wire mesh or netting used to trap birds, so that they can be banded or otherwise studied by ornithologists....

s" he developed.
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