Seasonal First Sightings - Wicken Fen

The first surprise, when walking in from the Upware end of Wicken Fen, was to see a Whooper Swan alongside the narrow boats with a couple of Mute Swans.   They weren't there on the return.   It was lovely to see a Blackcap, Chiffchaff in the open, a Swallow, a Common Tern and lastly a Whitethroat.   What a morning!   Additionally, I heard a Bittern booming and plenty of Cetti's Warblers but I've yet to get a decent sighting of a Cetti's, leave alone photograph one.