This morning there were two male Cuckoos on the reserve. In the afternoon another male was in the Slurry Lagoon reed-bed. In the late afternoon a Bittern was driven by Black-headed Gulls into the Slurry Lagoon reed-bed. Later it was seen again in the Deep Pit, but the gulls again drove it into the Slurry Lagoon reed-bed. There were also several Hairy Dragonflies and Emperor Dragonflies on the Slurry Lagoon. PS.