Bird task | ImageCLEF - Image Retrieval in CLEF: "he general public as well as professionals like park rangers, ecology consultants, fishers or, of course, the ornithologists themselves might actually be users of an automated bird identifying system, typically in the context of wider initiatives related to ecological surveillance or biodiversity conservation. Using audio records rather than bird pictures is justified by current practices. Birds are actually not easy to photograph as they are most of the time hidden, perched high in a tree or frightened by human presence, whereas audio calls and songs have proved to be easier to collect and much more discriminant. "
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