GROMS assessed the migratory status for vertebrates, resulting in a literature-referenced database of 4,430 migratory vertebrate species. Results were published in a book, together with a CD containing the relational database and GIS species distribution maps on a global scale for more than 1,000 species — more...

The exact number of migratory animals was estimated (likely between 5,000 and 10,000 species). To help eliminate this deficit, the UNEP/CMS Secretariat initiated the development of a database in 1997, in co-operation with the Zoological Research Museum Alexander Koenig in Bonn, funded by the Federal Environment Ministry and scientifically supported by the German Federal Agency for Nature Conservation until 2002. more...