At risk are 40% to 60% of the world's marbled teal population that live in the marshes, along with 90% of the world's population of Basra reed-warbler.[4] Also at risk are the sacred ibis and African darter.[5] A subspecies of the hooded crow known as the Mesopotamian crow is found in this part of southern Iraq.[6] Seven species are now extinct or near extinction from the marshes, including the Indian crested porcupine, the bandicoot rat and the marsh gray wolf. The draining of the marshes caused a significant decline in bioproductivity; following the Multi-National Force overthrow of the Saddam Hussein regime, water flow to the marshes was restored and the ecosystem has begun to recover.[7]