Doñana National Park: Treasure hunt

Questions:

1) When is the best time of the year to visit Doñana National Park to see birds?

http://www.andalucia.com/rural/birdwatching.htm

2) What fauna is in Doñana National Park?

http://www.visithuelva.com/andalusian_adventures/donana.asp?Sec=Information&Subsec=Flora_and_Fauna

3) What are the ecosystems in the Doñana National Park?

http://www.donanavisitas.es/en?gclid=CKDh0cz52aUCFYMI3wodUhMkjg

4) What is the extension of Doñana National Park?

http://www.juntadeandalucia.es/medioambiente/servtc5/ventana/mostrarFicha.do?idEspacio=7419&lg=EN

5) How many lynx live in Doñana National Park?

http://www.catsg.org/index.php?id=98