Vogelstimmen.de liefert Links zu Aufnahmen verschiedener Vogelstimmen aus einer Liste von 10.000 Vögeln. Außerdem bietet diese Website ein Forum mit der Möglichkeit Fragen zu stellen. [Information des Anbieters, verändert]
Database of Migratory Species at Global scale (4344 species, 5500 literature references, Internet-Links, data on distribution and migration behaviour, 1174 GIS-maps, Threat Analysis) - Migratory species are an important dynamic component of biodiversity. The conservation and protection of these species requires international cooperation. However, the level of knowledge we have is not sufficient and information is immensely scattered. Today we can only estimate the number of migratory species within a vast range of 5000 and 10000. GROMS consolidates and summarises all available information and the current states of knowledge into a relational database. It supports a Geographic Information system (GIS) interface and permits various search options for novice users and for experts. The GROMS database is structured to provide an additional tool for fact finding and decision-making by the CMS bodies and related regional Agreements as well as the Convention on Biological Diversity. To this effect, the database is designed to supply information on migratory species, their distribution map, population and bibliography. The current multilingual database contains 4,344 migratory vertebrates species, with their threat and protection status (International Red List), protection status (after CMS and CITES) as well as migration types and more than 5,500 literature citations. ... [Information of the supplier]
World Migratory Bird Day (WMBD) was initiated in 2006 and is a annual awareness-raising campaign highlighting the need for the protection of migratory birds and their habitats. On the second weekend each May, people around the world take action and organise public events such as bird festivals, education programmes and birdwatching excursions to celebrate World Migratory Bird Day. World Migratory Bird Day activities take place in many different countries and places, but are all linked through a single global campaign and theme. Anyone interested in organising an event to mark World Migratory Bird Day is encouraged to register their planned activity on this website. In this way, individual events can be shared with others around the world and help inspire them to get involved. ... [Information of the supplier]
Perhaps you have shared our frustration of sifting through your sound collection without ever finding the bird you recorded. Although an enormous amount of recordings are available on tape or even CDROM, they usually do not allow you to set up a sensible search strategy, in other words they are not true guides. This is odd, because of the great importance of songs in clinching ID's and in locating species in forests. The classification of birds in field guides is based on shared characteristics and usually leads to a reasonably fast convergence to a species, or genus, even in the tropics. For plants, elaborate decision trees exist that lead you to a certain species(group). For some areas such as Europe completely different decision trees even exist, allowing several independent lines of attack. The idea here is to do something similar for bird sounds. A set of simple characteristics has been chosen: the only instrument needed to determine them is a (stop)watch. More sophisticated and interesting ways of characterising and comparing the sounds exist, and we are planning to develop those here as time progresses, hopefully with your help. What these characteristics will do is limit the number of choices that you have, and more importantly bring together sounds that somehow sound similar, regardless of whether the species producing them are related or not. ... [Information of the supplier]
