Black swan?

Staggered out to the stream today ans looked across Marais to little lake. There are six white swans. Then I thought I saw a black one.
Only had phone and it’s really useless. Will try to get out there again tomorrow with camera or binoculars. But has to be from my side as too difficult for me to go on Marais.
Interview at Prefecture went badly! I had prepared hard on history and constitution. It was more about my fitting into French society and of course I did think of loads of good things to say . . . when I was back in the car.
Had blood test that showed improvement with platelets and iron.