Devon studies things.  There are occasions when he 'reacts first', but most times he will take things in, evaluate, then make his move.  He is a very sensible boy.

 Here Devon is watching some shorebirds, deciding whether or not they need some herding.
                                                      (Alas, an interloper scared them away.)

Devon practicing the Group 'Sit' with a few other Border Collies.  From left to right:
                                    Kaffee        Devon            Myst             Shooter      Dax

                      My four boys after a run.  I love to see them in their 'play clothes':-)

Kyle is standing in the back,    then    Kellan               Devon                Dax