Lillian~ There is no need to apologize at all for not being able to identify all the species of birds that you saw today. The fact that you shared your sightings to OBOL, something that you are under no obligation to do, is much appreciated. The fact that you saw a swan is very cool. If people want to go out and try and identify it to species, you have provided some helpful information as to presence and location. Sincerely,Russ NamitzMedford