Answer the following question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Madagascan Grebe -  The Madagascan Grebe (Tachybaptus pelzelnii) is a grebe found only in western and central Madagascar. It is classified as Vulnerable with a population of less than 5000. The most serious threat is in the west from reduction of habitat especially by rice cultivation.
Answer:
Animal