Laguna de Pitillas Nature · Pitillas, Zona Media, Navarra Declared a Reserva Natural (Nature Reserve) in 1987, the Pitillas lagoon -of endorheic origin, between 250 and 300 hectares shared with Santacara- is the second Navarrese wetland in diversity of waterfowl and a key site for the wintering of migratory species such as greylag geese, mallards, pochards, coots, and teals. 1987 Photo: Markel Olano (CC BY-SA 2.0) What to see and do in Pitillas