Escher sketch

How many cygnets do you see? Look again*. It took a while for me to work it out, and I took the photo! It reminded me of Escher's 'impossible' art.
Spent a few hours at my local Wildlife Trusts LNR, Titchmarsh. Amongst the observed were; swans, cormorants, a red kite, one Redwing (lots heard around), lots of fieldfare, tufted ducks, people, dogs, and so on - even one Brimstone butterfly! - it was sunny and warm at around 13ºc.
For Heidi.

*3 (I have other photos to back that up)