I went into dowtown DC today on the Metro. When I got to the station, I saw a gaggle of geese in the creek (or drainage ditch) next to the station. I then noticed a great blue heron, which was quite a surprise. I was talking on my iPhone so I could not take a photo of it. When I returned in the evening. I saw no geese but at the far end of the creek was the heron. I took a picture with iPhone, but it does not have a zoom lens. Here is a cropped version of the photo.
The heron is on the small island. When I tried to get closer the heron flew away. Oh how I wish that I had a zoom lens with me.