21st - An evening visit to Mas d'Agon today. Earlier in the day a juvenile Caspian Tern was seen crossing the N113 just to the east of St.Martin de Crau. The water level in the main lagoon at Mas d'Agon is quite low at the moment and, as a result, more waders seem to be present. A number of Little and Great Egrets, 2 Squacco Herons, 3 Black-winged Stilts and 3 Night Herons were feeding on the lagoon. On the far side I spotted a pair of feeding Wood Sandpipers and 3 Green Sandpipers flew over the reedbed. At least 5 Little Grebes and 7 Great Crested Grebes were also feeding on the surface weeds. A single Snipe then flew over the road and headed east. Then I noticed a small bird at the edge of the nearest reedbed. When I scoped it I was gobsmacked to find it was a juvenile Baillon's Crake, a bird I had never seen before! It fed for several minutes out in the open before disappearing back into the reeds. What a fantastic surprise! As the sun went down the number of terns returning to their roosts increased and the number of Whiskered Terns alone must have numbered around 200!  Just to add icing to the cake I then spotted an adult Purple Swamphen appear from another reedbed and potter about a bit before flying directly towards me, only to land out of sight behind the reedbed by the road. A great 2 hours birding!