There can be (mainly nerves, I think), but it's not always the case.

For instance, Rod Jenkins. Two or three time IBO World Champion. Goes all over the world coaching, been the main player in all of the "Masters of the Barebow" videos. Rod is an amazing target archer--and he's also a deer-killing machine. Another myth that Rod will bust is "a gap shooter can't hit moving targets". Rod is an admitted gap shooter, and he's one of if not THE best aerial target shooter I've ever seen. Rod doesn't go into different "modes" depending on what he's shooting at.

There are folks that are better at shooting animals, there are folks that are better at shooting targets....and there are folks that are dang good at both.