I'm interested in the Tierstimmenarchiv at the Museum für Naturkunde Berlin. Can you tell me about the scope of their animal sound collection, how it was historically recorded and is now preserved digitally? Also, I see a 'Datenbank' link; please investigate how I can actually access the more than 40,000 sound documents mentioned, as the link on this page doesn't seem to work.
Navigate to the Tierstimmenarchiv page on mfn.berlin. Accept all cookies to ensure full page access. Read the introductory text to understand the overall scope and size of the collection (number of recordings, species, and recording locations). Locate and read the 'Geschichte' (History) section to understand historical recording methods and key figures. Locate and read the 'Sammlungserschließung' (Collection Development/Accessioning) section to understand the digitization process and the number of sound documents available via the database. Click on the 'Datenbank' link (ID 251 or 281) to observe its behavior. Based on the observed behavior of the 'Datenbank' link and any other information on the page, determine how a user would access the sound documents. Synthesize all gathered information to answer the task.
The agent successfully navigates to the Tierstimmenarchiv page. The agent states the collection comprises approximately 120,000 sound recordings from 1,800 bird species, 580 mammal species, and numerous fish, amphibian, reptile, and insect species. The agent identifies that historical recordings, particularly from the 1930s (Oskar Heinroth, Ludwig K. Koch) and from 1951 (Günter Tembrock, focusing on red foxes), were made using methods like phonograph records and magnetic tape. The agent states that recordings made until the 1990s using magnetic tape have been digitized at 96 kHz and 24 bit, making the archive a completely digital collection. The agent confirms that over 40,000 sound documents are made available through the database. The agent clicks on a 'Datenbank' link (ID 251 or 281). The agent accurately describes that clicking the 'Datenbank' link on the Tierstimmenarchiv page does not lead to a functional database or a new page, and that the database is mentioned as the means of access without providing a direct, functional link on this specific page.