The chase.

Mute swans are not very partial to Greylag geese.

In my extra you can see the super moon from this morning. It is also known as the Worm Moon - I cribbed this explanation off the internet.
"March’s full moon was known as the “Worm Moon” because this is the time of year when the soil would begin to thaw and earthworm casts would be visible on the ground again. This would then prompt birds to return to feed again, signalling the beginning of spring."