The document discusses the Eurasian Curlew and its rare relative, the Slender-billed Curlew. It provides key facts about the Eurasian Curlew, including its population size, IUCN status, range and habitat. It then discusses the critically endangered Slender-billed Curlew, which has a population estimate of only 50 individuals. The remainder of the document outlines ongoing international efforts to search for and locate the elusive Slender-billed Curlew, including surveys of potential habitat areas in countries where it may still exist.