Geese in white, heron in green

I have just enjoyed a walk in the sunshine round a lake.

I came across a couple of Greylag Geese that looked as though they were sitting in the snow - the ground was covered with white daisies.

Greylag Geese in a field of snowy daisies

 Nearby, a heron was standing in the green water, which was full of algae.

Heron standing in water full of green algae