Birding a little river-side park in the Tagus Estuary on our first full day of birding southern Portugal, we saw our first Sardinian Warbler. The Sardinian was by far the most common Warbler we saw in Portugal. These are old world warblers…mostly drab and plain…not a patch on our colorful North American warblers…but still…great to see. Sony RX10iv at 600mm equivalent. Program mode with my custom birds and wildlife modifications. Processed in Polarr.