I am trying to get my lab to mark. Right now, when I throw a bumper, I command her to "watch" for the falling bumper. My ultimate goal is to have her "watch" for birds and mark the one that falls. I was thinking that I could also walk in a field and when a bird flies above us, I show her the bird and command "watch". That way, she will eventually look for birds when I give command. Any thoughts on this method? Will it conflict with the method that I am using now?