Red-necked grebe (Holboell's grebe) in nest with single egg - Wallnau Waterfowl Reservation - Island of Fehmarn - Germany

Sony Alpha 700, Sigma EX RF APO 4-6.3 50-500 mm, 1/500 s, f/8.0, evaluative metering -2/3 stop, ISO 250 at 500 mm (750 mm eff.),