D and I often go to feed ducks in the morning at one of our favorite parks. We even have a favorite duck--Greedy. He's an odd looking duck, always the first duck to meet us, waddling up, quickly passing the other ducks and geese, beak opened wide wanting us to drop a piece of bread right into his mouth. The last time we were there, Greedy wasn't himself, and I noticed he had a little green color on some of his feathers.
"He has a little algae on him" I said to D.
It took us a while to find Greedy that morning, and when he did come up he was slower than usual. After a few minutes he headed back to the water. Then D did ran off to the playground announcing "Greedy is allergic to cats now."