Gannet in flight at Grassholm

The two images demonstrate the flexibility of the Nikon D810 in being able to crop in to the subject using the 36MP that are available. This effectively turns the field of view of 300mm F4 lens into a 600mm F4. I have just bought the new Fresnel 300F4 which I can't wait to try out on puffins in flight on Skomer.

The adults are now bringing in sandeels to feed their newly hatched chicks.