To start with, I'd underline that, on San Lorenzo lagoon, there were quite a few Curlews, four Avocets, some resting Grey Herons on the little island with a lonely Spoonbill. There were few Greenshanks and Redshanks as well. And, as every day, Teals were the kings of the place.
Kurlinta Handia, Abozetak, Zertzeta Arrunta
Zarapito Real, Avocetas, Cerceta Común
Curlew, Avocets and a Teal
Near the airport there was a heavy swell and I only saw a courageous Great Northern Diver and a valiant Black-necked Grebe. (Those photos were taken some days before, under better whather conditions).
Aliota Haundia - Colimbo Grande - Great Northern Diver
Txilinporta Lepabeltza - Zampullín Cuellinegro - Black-necked Grebe
In the area of Itzaberri marsh there was a Brent Goose swimming between lots of Gadwalls and a pair of Redshanks looking for food.
Kuliska Zuriak - Archibebes Claros - Redshanks
There were five Tufted Ducks on the freshwater lagoon. I could distinguish a male between them. It is black and white while females are basically brown. On the same lagoon there were three Pochards. Those and the former are diver ducks that dive once and again looking for food.
Before leaving the Park I could sight a Snipe. Its long beak was hidden under its wings traying to keep warm itself.
Istingor Arrunta - Agachadiza Común - Snipe