The best laid plans and all that, in advance I looked up the weather forecast for the location - sunny skies and fluffy clouds also checked again on the day- sounded like ISO 800 so off I went to Rhyader. As I approached it got progressively cloudy and by the time the birds were fed it was dull.
Olympus E-M1MarkIII
Focal Length : 210.0mm (40-150mm & 1.4TC)
Focal length in 35 mm film : 421.0mm
ISO : 2000
Exposure compensation : 0.0 EV
Exposure mode : Manual exposure
Shutter : 1/2500 sec
Aperture : F4
ACR/PSCC